Suppress clang/test/Driver/rewrite-map-in-diagnostics.c on win32 for now. This doesn't fail on "env clang". Investigating.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@225626 91177308-0d34-0410-b5e6-96231b3b80d8

test/Driver/rewrite-map-in-diagnostics.c

@@ -7,3 +7,6 @@
 #pragma clang __debug parser_crash
 
 // CHECK: note: diagnostic msg: {{.*}}rewrite.map
+
+// FIXME: This doesn't fail on "env clang". Investigating.
+// REQUIRES: shell