Update gcc4 install instructions to reflect change to 4.5


git-svn-id: file:///srv/svn/repos/haiku/buildtools/trunk@42529 a95241bf-73f2-0310-859d-f6bbb57e9c96
Trying to fix #8063 (failure to build gcc2 when updating info files):
* remove all *.info targets so the gcc2 build system doesn't
  try to update them, as that doesn't always work because of
  apparent incompatibilities with newer makeinfo versions


git-svn-id: file:///srv/svn/repos/haiku/buildtools/trunk@42999 a95241bf-73f2-0310-859d-f6bbb57e9c96
Cleanup gcc4 buildtools a bit:
* replace gmp.info-? in gcc/gmp/doc by gmp.info, since the latter
  is the makeinfo target that will otherwise have to be generated
  each time gcc4 is built
* add autom4te.cache to svn:ignore

git-svn-id: file:///srv/svn/repos/haiku/buildtools/trunk@43010 a95241bf-73f2-0310-859d-f6bbb57e9c96
Drop obsolete documentation on building as cross compiler for BeOS
Drop another .info target that triggers invocation of makeinfo.
Add autom4te.cache to .gitignore
Add more generated files of legacy gcc to .gitignore
Prevent fixing the includes.

Forcibly prevent fixinclude from executing. This prevents the spawning of a
shell process, which would be abandoned due to fixinc crashing.

Submitted By: BLFS Book <blfs-book@linuxfromscratch.org>
Date: 2003-10-05
Initial Package Version: 2.95.3
Origin: BLFS Book
http://www.linuxfromscratch.org/blfs/view/5.1/general/gcc2.html
Define __STDC_ISO_10646__ in our gccs.

* define __STDC_ISO_10646__ to '201103' in order to indicate that
  Haiku's wchar_t supports the Universal Character Set (UCS) defined
  by the ISO 10646 standard published in March 2011.
Bump legacy compiler version.
Improve build-gcc2-optional-package.sh:

* automatically build the compiler if it doesn't exist yet
* protect against unneeded cruft breaking the build
Add Haiku to list of elf-target so that is_elf is true.
This enables --enable-gold flag to be used (doesn't compile yet though).
The gold linker promises up to five times faster linking than ld, it is also possible to use link-time optimizations.
Fix use of non-existent variable (GCCDATE instead of gccDate).
Automatic whitespace cleanup. No functional change.
Created new jam variable JAMJOBS, which is set by the -jx flag.
Bumped up the VERSION and made JAMVERSYM identical to it.
Get rid of svr4, it will be deprecated in 4.6
import binutils 2.19
import binutils 2.22
import binutils 2.19