"Mac OS/X" -> "Mac OS X" spelling fixes for clang.

Patch from Sean McBride <sean@rogue-research.com>!


git-svn-id: http://llvm.org/svn/llvm-project/cfe/trunk@203259 91177308-0d34-0410-b5e6-96231b3b80d8
Add a note in the user manual that tsan is not supported on Mac.

Patch from Sean McBride <sean@rogue-research.com>!


git-svn-id: http://llvm.org/svn/llvm-project/cfe/trunk@203260 91177308-0d34-0410-b5e6-96231b3b80d8
[C++11] Replacing IndirectFieldDecl iterators chain_begin() and chain_end() with iterator_range chains(). Updating all of the usages of the iterators with range-based for loops.

git-svn-id: http://llvm.org/svn/llvm-project/cfe/trunk@203261 91177308-0d34-0410-b5e6-96231b3b80d8
Renaming the chains() ranged iterator to chain() per suggestion by Richard Smith.

git-svn-id: http://llvm.org/svn/llvm-project/cfe/trunk@203262 91177308-0d34-0410-b5e6-96231b3b80d8
Remove dead return and simplify code.

git-svn-id: http://llvm.org/svn/llvm-project/cfe/trunk@203266 91177308-0d34-0410-b5e6-96231b3b80d8