test/Driver/darwin-cc.c: FileCheck-ize and tweak for Mingw MSYS bash.

MSYS substitutes path (that begins with "/") to de-mounted Windows path.
"/tmp" might be substituted as "C:/DOCUME~1/chapuni/LOCALS~1/Temp".

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@127860 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed