[OPENMP] Small update in threadprivate variables processing to fix template instantiation.


git-svn-id: http://llvm.org/svn/llvm-project/cfe/trunk@203214 91177308-0d34-0410-b5e6-96231b3b80d8
Tweak some test paths to match on Windows

git-svn-id: http://llvm.org/svn/llvm-project/cfe/trunk@203215 91177308-0d34-0410-b5e6-96231b3b80d8