Disable this on mingw again.

I will investigate why it still fails, but for now this gets the bots green.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@189807 91177308-0d34-0410-b5e6-96231b3b80d8
Revert "OpenMP: Data-sharing attributes analysis and clause 'shared'"

This reverts commit r189795.

threadprivate_messages.cpp is faling on windows.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@189811 91177308-0d34-0410-b5e6-96231b3b80d8
Remove useless reinterpret_casts from Stmt.cpp

Summary:
I have no idea why these were there in the first place, but now they are
certainly not necessary.

Reviewers: rsmith

CC: cfe-commits

Differential Revision: http://llvm-reviews.chandlerc.com/D1581

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@189813 91177308-0d34-0410-b5e6-96231b3b80d8