Testing in progress.  Well, maybe later.
> $ ./configure --prefix=/old-home/gnu/proj/gcc/_inst --enable-bootstrap --enable-languages=c,c++
> checking build system type... x86_64-unknown-linux-gnu
> checking host system type... x86_64-unknown-linux-gnu
> checking target system type... x86_64-unknown-linux-gnu
> checking for a BSD-compatible install... /usr/bin/install -c
> checking whether ln works... yes
> checking whether ln -s works... yes
> checking for a sed that does not truncate output... /bin/sed
> checking for gawk... gawk
> checking for gcc... gcc
> checking for C compiler default output file name...
> configure: error: in `/old-home/gnu/proj/gcc-bld':
> configure: error: C compiler cannot create executables
> See `config.log' for more details.

that file did not say anything decipherable:

> Target: x86_64-suse-linux
> Configured with: ../configure --prefix=/usr --infodir=/usr/share/info --mandir=/usr/share/man --libdir=/usr/lib64 --libexecdir=/usr/lib64 --enable-languages=c,c++,objc,fortran,obj-c++,java,ada --enable-checking=release --with-gxx-include-dir=/usr/include/c++/4.5 --enable-ssp --disable-libssp --disable-plugin --with-bugurl=http://bugs.opensuse.org/ --with-pkgversion='SUSE Linux' --disable-libgcj --disable-libmudflap --with-slibdir=/lib64 --with-system-zlib --enable-__cxa_atexit --enable-libstdcxx-allocator=new --disable-libstdcxx-pch --enable-version-specific-runtime-libs --program-suffix=-4.5 --enable-linux-futex --without-system-libunwind --enable-gold --with-plugin-ld=/usr/bin/gold --with-arch-32=i586 --with-tune=generic --build=x86_64-suse-linux
> Thread model: posix
> gcc version 4.5.1 20101208 [gcc-4_5-branch revision 167585] (SUSE Linux)
> configure:4037: $? = 0
> configure:4026: gcc -V >&5
> gcc: '-V' option must have argument
> configure:4037: $? = 1
> configure:4026: gcc -qversion >&5
> gcc: unrecognized option '-qversion'
> gcc: no input files
> configure:4037: $? = 1
> configure:4057: checking for C compiler default output file name
> configure:4079: gcc    conftest.c  >&5
> gcc: error trying to exec 'cc1': execvp: No such file or directory

So I'll have to try another day.  I'll put this patch on a back burner
until I've tested it.

2011-06-05  Bruce Korb  <bkorb@gnu.org>

	* fixincludes/fixincl.c (machine_matches): mark a const pointer as "const".
	(run_compiles): the fix data are const.  Mark them so.
	(process): likewise
	(start_fixer): likewise, but simplify some code, too.

	* fixincludes/fixincl.tpl (tSCC): replace with "static char const".  Burn the bytes.
	* fixincludes/fixlib.h: likewise
	* fixincludes/fixincl.x: regenerate
	* fixincludes/genfixes: more recent autogen is somewhat more GNU standards
	compliant and does not put "Ver." in front of the version number.
	Adjust the version check in the script.

	* fixincludes/inclhack.def: comment uncommented fixes and alphabetize.