installation information tweaks

[Ian Lance Taylor]

   From: Dave Love <d.love@dl.ac.uk>
   Date: 06 Sep 1997 12:37:48 +0100

   + When building gcc on a hppa*-*-hpux10 platform, the @samp{fixincludes} step
   + (which involves running a @code{sed} script) fails because of a bug in
   + the vendor's implementation of @code{sed}.  Currently the only known
   + workaround is to install GNU @code{sed} before building GCC@.  The file
   + @file{sed-2.05.bin.hpux10} available from mirrors of the GNU
   + distribution area is a precompiled binary for that platform.

I already checked in a workaround for one bug that was specific to the
HP/UX 10.20 version of sed:

Wed Oct  2 17:29:53 1996  Ian Lance Taylor  <ian@cygnus.com>

	* fixincludes: Add a hack to the big sed script to work around a
	bug in the sed implementation on HP/UX 10.20.


What is the bug that you are discussing here?  Would it be possible to
work around it?

Ian