* GCC 4.2: restore the ability to build a statically linked compiler,
needed for the Nixpkgs bootstrap.
* GCC 4.2: use symlinks instead of hard links in $out/bin
(NIXPKGS-62).
svn path=/nixpkgs/branches/stdenv-updates/; revision=9771
* Compute --enable-languages in the Nix expression instead of in the
builder.
* Pass some flags through the Make command line instead of patching
the Makefiles.
* gcc: generate code for i686 by default (instead of i386).
* gcc: patch out some references to /lib and /usr/lib.
svn path=/nixpkgs/trunk/; revision=8722
