llvm-gcc4 1.8 mingw32 prerelease

[Anton_Korobeynikov]

Hello Everyone.

The tarball with llvm-gcc4 built under mingw32 has just been uploaded
to http://llvm.org/prereleases/1.8/llvm-gcc4-1.8-x86-mingw32.tar.bz2

Please consider it highly "experimental".