- r127284 Availability of Lit on MSYS configure.

  - r127729 test/Driver/hello.c: Tweak for cygming.
  - r127860, r127861 tweak 2 tests for MSYS bash.
--- Merging r127284 into '.':
U    test/Makefile
--- Merging r127729 into '.':
U    test/Driver/hello.c
--- Merging r127860 into '.':
U    test/Driver/darwin-cc.c
--- Merging r127861 into '.':
U    test/Driver/sysroot-flags.c

llvm-svn: 128260