[OPENMP] Simplified data-sharing attributes analysis.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@204135 91177308-0d34-0410-b5e6-96231b3b80d8
clang/test/Driver/sanitizer-ld.c: Tweak to accept dos path.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@204138 91177308-0d34-0410-b5e6-96231b3b80d8