RuntimeDyld/X86/MachO_x86-64_PIC_relocations.s: Use %/T here, or sed(1) would be confused with dos path.
Suppress a test on win32 for now, llvm/test/ExecutionEngine/RuntimeDyld/X86/MachO_x86-64_PIC_relocations.s.

FIXME: Fix searching StubMap with '/' and '\\' on Win32.