4.7. Why are the header files missing after an install of the Development Set?

	One of the packages' Install scripts (apparently that of
"Curses/Terminfo Programmers Package"), copies curses.h to
/usr/include anticipating that the directory has already been created
by a previous package's Install script.  If /usr/include doesn't exist
yet because the packages weren't installed in the right order, the
Install script will make a *file* called /usr/include, which is really
curses.h.

	To prevent this from happening, install the packages in this
order:

		Curses/Terminfo End User Package
		Development Set 3.5x
		Curses/Terminfo Programmers Package