GNU LESSER GENERAL PUBLIC LICENSE 
		       Version 2.1, February 1999 
 
 Copyright (C) 1991, 1999 Free Software Foundation, Inc. 
     59 Temple Place, Suite 330, Boston, MA  02111-1307  USA 
 Everyone is permitted to copy and distribute verbatim copies 
 of this license document, but changing it is not allowed. 
 
[This is the first released version of the Lesser GPL.  It also counts 
 as the successor of the GNU Library Public License, version 2, hence 
 the version number 2.1.] 
 
			    Preamble 
 
  The licenses for most software are designed to take away your 
freedom to share and change it.  By contrast, the GNU General Public 
Licenses are intended to guarantee your freedom to share and change 
free software--to make sure the software is free for all its users. 
 
  This license, the Lesser General Public License, applies to some 
specially designated software packages--typically libraries--of the 
Free Software Foundation and other authors who decide to use it.  You 
can use it too, but we suggest you first think carefully about whether 
this license or the ordinary General Public License is the better 
strategy to use in any particular case, based on the explanations below. 
 
  When we speak of free software, we are referring to freedom of use, 
not price.  Our General Public Licenses are designed to make sure that 
you have the freedom to distribute copies of free software (and charge 
for this service if you wish); that you receive source code or can get 
it if you want it; that you can change the software and use pieces of 
it in new free programs; and that you are informed that you can do 
these things. 
 
  To protect your rights, we need to make restrictions that forbid 
distributors to deny you these rights or to ask you to surrender these 
rights.  These restrictions translate to certain responsibilities for 
you if you distribute copies of the library or if you modify it. 
 
  For example, if you distribute copies of the library, whether gratis 
or for a fee, you must give the recipients all the rights that we gave 
you.  You must make sure that they, too, receive or can get the source 
code.  If you link other code with the library, you must provide 
complete object files to the recipients, so that they can relink them 
with the library after making changes to the library and recompiling 
it.  And you must show them these terms so they know their rights. 
 
  We protect your rights with a two-step method: (1) we copyright the 
library, and (2) we offer you this license, which gives you legal 
permission to copy, distribute and/or modify the library. 
 
  To protect each distributor, we want to make it very clear that 
there is no warranty for the free library.  Also, if the library is 
modified by someone else and passed on, the recipients should know 
that what they have is not the original version, so that the original 
author's reputation will not be affected by problems that might be 
introduced by others. 
 
  Finally, software patents pose a constant threat to the existence of 
any free program.  We wish to make sure that a company cannot 
effectively restrict the users of a free program by obtaining a 
restrictive license from a patent holder.  Therefore, we insist that 
any patent license obtained for a version of the library must be 
consistent with the full freedom of use specified in this license. 
 
  Most GNU software, including some libraries, is covered by the 
ordinary GNU General Public License.  This license, the GNU Lesser 
General Public License, applies to certain designated libraries, and 
is quite different from the ordinary General Public License.  We use 
this license for certain libraries in order to permit linking those 
libraries into non-free programs. 
 
  When a program is linked with a library, whether statically or using 
a shared library, the combination of the two is legally speaking a 
combined work, a derivative of the original library.  The ordinary 
General Public License therefore permits such linking only if the 
entire combination fits its criteria of freedom.  The Lesser General 
Public License permits more lax criteria for linking other code with 
the library. 
 
  We call this license the "Lesser" General Public License because it 
does Less to protect the user's freedom than the ordinary General 
Public License.  It also provides other free software developers Less 
of an advantage over competing non-free programs.  These disadvantages 
are the reason we use the ordinary General Public License for many 
libraries.  However, the Lesser license provides advantages in certain 
special circumstances. 
 
  For example, on rare occasions, there may be a special need to 
encourage the widest possible use of a certain library, so that it becomes 
a de-facto standard.  To achieve this, non-free programs must be 
allowed to use the library.  A more frequent case is that a free 
library does the same job as widely used non-free libraries.  In this 
case, there is little to gain by limiting the free library to free 
software only, so we use the Lesser General Public License. 
 
  In other cases, permission to use a particular library in non-free 
programs enables a greater number of people to use a large body of 
free software.  For example, permission to use the GNU C Library in 
non-free programs enables many more people to use the whole GNU 
operating system, as well as its variant, the GNU/Linux operating 
system. 
 
  Although the Lesser General Public License is Less protective of the 
users' freedom, it does ensure that the user of a program that is 
linked with the Library has the freedom and the wherewithal to run 
that program using a modified version of the Library. 
 
  The precise terms and conditions for copying, distribution and 
modification follow.  Pay close attention to the difference between a 
"work based on the library" and a "work that uses the library".  The 
former contains code derived from the library, whereas the latter must 
be combined with the library in order to run. 
 
		  GNU LESSER GENERAL PUBLIC LICENSE 
   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION 
 
  0. This License Agreement applies to any software library or other 
program which contains a notice placed by the copyright holder or 
other authorized party saying it may be distributed under the terms of 
this Lesser General Public License (also called "this License"). 
Each licensee is addressed as "you". 
 
  A "library" means a collection of software functions and/or data 
prepared so as to be conveniently linked with application programs 
(which use some of those functions and data) to form executables. 
 
  The "Library", below, refers to any such software library or work 
which has been distributed under these terms.  A "work based on the 
Library" means either the Library or any derivative work under 
copyright law: that is to say, a work containing the Library or a 
portion of it, either verbatim or with modifications and/or translated 
straightforwardly into another language.  (Hereinafter, translation is 
included without limitation in the term "modification".) 
 
  "Source code" for a work means the preferred form of the work for 
making modifications to it.  For a library, complete source code means 
all the source code for all modules it contains, plus any associated 
interface definition files, plus the scripts used to control compilation 
and installation of the library. 
 
  Activities other than copying, distribution and modification are not 
covered by this License; they are outside its scope.  The act of 
running a program using the Library is not restricted, and output from 
such a program is covered only if its contents constitute a work based 
on the Library (independent of the use of the Library in a tool for 
writing it).  Whether that is true depends on what the Library does 
and what the program that uses the Library does. 
   
  1. You may copy and distribute verbatim copies of the Library's 
complete source code as you receive it, in any medium, provided that 
you conspicuously and appropriately publish on each copy an 
appropriate copyright notice and disclaimer of warranty; keep intact 
all the notices that refer to this License and to the absence of any 
warranty; and distribute a copy of this License along with the 
Library. 
 
  You may charge a fee for the physical act of transferring a copy, 
and you may at your option offer warranty protection in exchange for a 
fee. 
 
  2. You may modify your copy or copies of the Library or any portion 
of it, thus forming a work based on the Library, and copy and 
distribute such modifications or work under the terms of Section 1 
above, provided that you also meet all of these conditions: 
 
    a) The modified work must itself be a software library. 
 
    b) You must cause the files modified to carry prominent notices 
    stating that you changed the files and the date of any change. 
 
    c) You must cause the whole of the work to be licensed at no 
    charge to all third parties under the terms of this License. 
 
    d) If a facility in the modified Library refers to a function or a 
    table of data to be supplied by an application program that uses 
    the facility, other than as an argument passed when the facility 
    is invoked, then you must make a good faith effort to ensure that, 
    in the event an application does not supply such function or 
    table, the facility still operates, and performs whatever part of 
    its purpose remains meaningful. 
 
    (For example, a function in a library to compute square roots has 
    a purpose that is entirely well-defined independent of the 
    application.  Therefore, Subsection 2d requires that any 
    application-supplied function or table used by this function must 
    be optional: if the application does not supply it, the square 
    root function must still compute square roots.) 
 
These requirements apply to the modified work as a whole.  If 
identifiable sections of that work are not derived from the Library, 
and can be reasonably considered independent and separate works in 
themselves, then this License, and its terms, do not apply to those 
sections when you distribute them as separate works.  But when you 
distribute the same sections as part of a whole which is a work based 
on the Library, the distribution of the whole must be on the terms of 
this License, whose permissions for other licensees extend to the 
entire whole, and thus to each and every part regardless of who wrote 
it. 
 
Thus, it is not the intent of this section to claim rights or contest 
your rights to work written entirely by you; rather, the intent is to 
exercise the right to control the distribution of derivative or 
collective works based on the Library. 
 
In addition, mere aggregation of another work not based on the Library 
with the Library (or with a work based on the Library) on a volume of 
a storage or distribution medium does not bring the other work under 
the scope of this License. 
 
  3. You may opt to apply the terms of the ordinary GNU General Public 
License instead of this License to a given copy of the Library.  To do 
this, you must alter all the notices that refer to this License, so 
that they refer to the ordinary GNU General Public License, version 2, 
instead of to this License.  (If a newer version than version 2 of the 
ordinary GNU General Public License has appeared, then you can specify 
that version instead if you wish.)  Do not make any other change in 
these notices. 
 
  Once this change is made in a given copy, it is irreversible for 
that copy, so the ordinary GNU General Public License applies to all 
subsequent copies and derivative works made from that copy. 
 
  This option is useful when you wish to copy part of the code of 
the Library into a program that is not a library. 
 
  4. You may copy and distribute the Library (or a portion or 
derivative of it, under Section 2) in object code or executable form 
under the terms of Sections 1 and 2 above provided that you accompany 
it with the complete corresponding machine-readable source code, which 
must be distributed under the terms of Sections 1 and 2 above on a 
medium customarily used for software interchange. 
 
  If distribution of object code is made by offering access to copy 
from a designated place, then offering equivalent access to copy the 
source code from the same place satisfies the requirement to 
distribute the source code, even though third parties are not 
compelled to copy the source along with the object code. 
 
  5. A program that contains no derivative of any portion of the 
Library, but is designed to work with the Library by being compiled or 
linked with it, is called a "work that uses the Library".  Such a 
work, in isolation, is not a derivative work of the Library, and 
therefore falls outside the scope of this License. 
 
  However, linking a "work that uses the Library" with the Library 
creates an executable that is a derivative of the Library (because it 
contains portions of the Library), rather than a "work that uses the 
library".  The executable is therefore covered by this License. 
Section 6 states terms for distribution of such executables. 
 
  When a "work that uses the Library" uses material from a header file 
that is part of the Library, the object code for the work may be a 
derivative work of the Library even though the source code is not. 
Whether this is true is especially significant if the work can be 
linked without the Library, or if the work is itself a library.  The 
threshold for this to be true is not precisely defined by law. 
 
  If such an object file uses only numerical parameters, data 
structure layouts and accessors, and small macros and small inline 
functions (ten lines or less in length), then the use of the object 
file is unrestricted, regardless of whether it is legally a derivative 
work.  (Executables containing this object code plus portions of the 
Library will still fall under Section 6.) 
 
  Otherwise, if the work is a derivative of the Library, you may 
distribute the object code for the work under the terms of Section 6. 
Any executables containing that work also fall under Section 6, 
whether or not they are linked directly with the Library itself. 
 
  6. As an exception to the Sections above, you may also combine or 
link a "work that uses the Library" with the Library to produce a 
work containing portions of the Library, and distribute that work 
under terms of your choice, provided that the terms permit 
modification of the work for the customer's own use and reverse 
engineering for debugging such modifications. 
 
  You must give prominent notice with each copy of the work that the 
Library is used in it and that the Library and its use are covered by 
this License.  You must supply a copy of this License.  If the work 
during execution displays copyright notices, you must include the 
copyright notice for the Library among them, as well as a reference 
directing the user to the copy of this License.  Also, you must do one 
of these things: 
 
    a) Accompany the work with the complete corresponding 
    machine-readable source code for the Library including whatever 
    changes were used in the work (which must be distributed under 
    Sections 1 and 2 above); and, if the work is an executable linked 
    with the Library, with the complete machine-readable "work that 
    uses the Library", as object code and/or source code, so that the 
    user can modify the Library and then relink to produce a modified 
    executable containing the modified Library.  (It is understood 
    that the user who changes the contents of definitions files in the 
    Library will not necessarily be able to recompile the application 
    to use the modified definitions.) 
 
    b) Use a suitable shared library mechanism for linking with the 
    Library.  A suitable mechanism is one that (1) uses at run time a 
    copy of the library already present on the user's computer system, 
    rather than copying library functions into the executable, and (2) 
    will operate properly with a modified version of the library, if 
    the user installs one, as long as the modified version is 
    interface-compatible with the version that the work was made with. 
 
    c) Accompany the work with a written offer, valid for at 
    least three years, to give the same user the materials 
    specified in Subsection 6a, above, for a charge no more 
    than the cost of performing this distribution. 
 
    d) If distribution of the work is made by offering access to copy 
    from a designated place, offer equivalent access to copy the above 
    specified materials from the same place. 
 
    e) Verify that the user has already received a copy of these 
    materials or that you have already sent this user a copy. 
 
  For an executable, the required form of the "work that uses the 
Library" must include any data and utility programs needed for 
reproducing the executable from it.  However, as a special exception, 
the materials to be distributed need not include anything that is 
normally distributed (in either source or binary form) with the major 
components (compiler, kernel, and so on) of the operating system on 
which the executable runs, unless that component itself accompanies 
the executable. 
 
  It may happen that this requirement contradicts the license 
restrictions of other proprietary libraries that do not normally 
accompany the operating system.  Such a contradiction means you cannot 
use both them and the Library together in an executable that you 
distribute. 
 
  7. You may place library facilities that are a work based on the 
Library side-by-side in a single library together with other library 
facilities not covered by this License, and distribute such a combined 
library, provided that the separate distribution of the work based on 
the Library and of the other library facilities is otherwise 
permitted, and provided that you do these two things: 
 
    a) Accompany the combined library with a copy of the same work 
    based on the Library, uncombined with any other library 
    facilities.  This must be distributed under the terms of the 
    Sections above. 
 
    b) Give prominent notice with the combined library of the fact 
    that part of it is a work based on the Library, and explaining 
    where to find the accompanying uncombined form of the same work. 
 
  8. You may not copy, modify, sublicense, link with, or distribute 
the Library except as expressly provided under this License.  Any 
attempt otherwise to copy, modify, sublicense, link with, or 
distribute the Library is void, and will automatically terminate your 
rights under this License.  However, parties who have received copies, 
or rights, from you under this License will not have their licenses 
terminated so long as such parties remain in full compliance. 
 
  9. You are not required to accept this License, since you have not 
signed it.  However, nothing else grants you permission to modify or 
distribute the Library or its derivative works.  These actions are 
prohibited by law if you do not accept this License.  Therefore, by 
modifying or distributing the Library (or any work based on the 
Library), you indicate your acceptance of this License to do so, and 
all its terms and conditions for copying, distributing or modifying 
the Library or works based on it. 
 
  10. Each time you redistribute the Library (or any work based on the 
Library), the recipient automatically receives a license from the 
original licensor to copy, distribute, link with or modify the Library 
subject to these terms and conditions.  You may not impose any further 
restrictions on the recipients' exercise of the rights granted herein. 
You are not responsible for enforcing compliance by third parties with 
this License. 
 
  11. If, as a consequence of a court judgment or allegation of patent 
infringement or for any other reason (not limited to patent issues), 
conditions are imposed on you (whether by court order, agreement or 
otherwise) that contradict the conditions of this License, they do not 
excuse you from the conditions of this License.  If you cannot 
distribute so as to satisfy simultaneously your obligations under this 
License and any other pertinent obligations, then as a consequence you 
may not distribute the Library at all.  For example, if a patent 
license would not permit royalty-free redistribution of the Library by 
all those who receive copies directly or indirectly through you, then 
the only way you could satisfy both it and this License would be to 
refrain entirely from distribution of the Library. 
 
If any portion of this section is held invalid or unenforceable under any 
particular circumstance, the balance of the section is intended to apply, 
and the section as a whole is intended to apply in other circumstances. 
 
It is not the purpose of this section to induce you to infringe any 
patents or other property right claims or to contest validity of any 
such claims; this section has the sole purpose of protecting the 
integrity of the free software distribution system which is 
implemented by public license practices.  Many people have made 
generous contributions to the wide range of software distributed 
through that system in reliance on consistent application of that 
system; it is up to the author/donor to decide if he or she is willing 
to distribute software through any other system and a licensee cannot 
impose that choice. 
 
This section is intended to make thoroughly clear what is believed to 
be a consequence of the rest of this License. 
 
  12. If the distribution and/or use of the Library is restricted in 
certain countries either by patents or by copyrighted interfaces, the 
original copyright holder who places the Library under this License may add 
an explicit geographical distribution limitation excluding those countries, 
so that distribution is permitted only in or among countries not thus 
excluded.  In such case, this License incorporates the limitation as if 
written in the body of this License. 
 
  13. The Free Software Foundation may publish revised and/or new 
versions of the Lesser General Public License from time to time. 
Such new versions will be similar in spirit to the present version, 
but may differ in detail to address new problems or concerns. 
 
Each version is given a distinguishing version number.  If the Library 
specifies a version number of this License which applies to it and 
"any later version", you have the option of following the terms and 
conditions either of that version or of any later version published by 
the Free Software Foundation.  If the Library does not specify a 
license version number, you may choose any version ever published by 
the Free Software Foundation. 
 
  14. If you wish to incorporate parts of the Library into other free 
programs whose distribution conditions are incompatible with these, 
write to the author to ask for permission.  For software which is 
copyrighted by the Free Software Foundation, write to the Free 
Software Foundation; we sometimes make exceptions for this.  Our 
decision will be guided by the two goals of preserving the free status 
of all derivatives of our free software and of promoting the sharing 
and reuse of software generally. 
 
			    NO WARRANTY 
 
  15. BECAUSE THE LIBRARY IS LICENSED FREE OF CHARGE, THERE IS NO 
WARRANTY FOR THE LIBRARY, TO THE EXTENT PERMITTED BY APPLICABLE LAW. 
EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR 
OTHER PARTIES PROVIDE THE LIBRARY "AS IS" WITHOUT WARRANTY OF ANY 
KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE 
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 
PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE 
LIBRARY IS WITH YOU.  SHOULD THE LIBRARY PROVE DEFECTIVE, YOU ASSUME 
THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION. 
 
  16. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN 
WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY 
AND/OR REDISTRIBUTE THE LIBRARY AS PERMITTED ABOVE, BE LIABLE TO YOU 
FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR 
CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE 
LIBRARY (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING 
RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A 
FAILURE OF THE LIBRARY TO OPERATE WITH ANY OTHER SOFTWARE), EVEN IF 
SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH 
DAMAGES. 
 
		     END OF TERMS AND CONDITIONS 
 
           How to Apply These Terms to Your New Libraries 
 
  If you develop a new library, and you want it to be of the greatest 
possible use to the public, we recommend making it free software that 
everyone can redistribute and change.  You can do so by permitting 
redistribution under these terms (or, alternatively, under the terms of the 
ordinary General Public License). 
 
  To apply these terms, attach the following notices to the library.  It is 
safest to attach them to the start of each source file to most effectively 
convey the exclusion of warranty; and each file should have at least the 
"copyright" line and a pointer to where the full notice is found. 
 
    <one line to give the library's name and a brief idea of what it does.> 
    Copyright (C) <year>  <name of author> 
 
    This library is free software; you can redistribute it and/or 
    modify it under the terms of the GNU Lesser General Public 
    License as published by the Free Software Foundation; either 
    version 2.1 of the License, or (at your option) any later version. 
 
    This library is distributed in the hope that it will be useful, 
    but WITHOUT ANY WARRANTY; without even the implied warranty of 
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU 
    Lesser General Public License for more details. 
 
    You should have received a copy of the GNU Lesser General Public 
    License along with this library; if not, write to the Free Software 
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA 
 
Also add information on how to contact you by electronic and paper mail. 
 
You should also get your employer (if you work as a programmer) or your 
school, if any, to sign a "copyright disclaimer" for the library, if 
necessary.  Here is a sample; alter the names: 
 
  Yoyodyne, Inc., hereby disclaims all copyright interest in the 
  library `Frob' (a library for tweaking knobs) written by James Random Hacker. 
 
  <signature of Ty Coon>, 1 April 1990 
  Ty Coon, President of Vice 
 
That's all there is to it!