clang/test/Sema/struct-packed-align.c: Add the case in MS mode that alignment doesn't affect packing.

Also, revert a couple of suppressions.
  r214298, "Suppress clang/test/Sema/struct-packed-align.c for targeting LLP64."
  r214301, "Suppress clang/test/Sema/struct-packed-align.c also on msvc for investigating."

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@214794 91177308-0d34-0410-b5e6-96231b3b80d8
ThreadSafetyAnalysis: Fix annotations in class members. [-Wdocumentation]

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@214795 91177308-0d34-0410-b5e6-96231b3b80d8
ThreadSafety.cpp: Prune bogus \param(s). [-Wdocumentation]

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@214796 91177308-0d34-0410-b5e6-96231b3b80d8