Merging r197445:

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r197445 | rtrieu | 2013-12-16 19:40:40 -0500 (Mon, 16 Dec 2013) | 4 lines

For -Wconsumed, walk the namespaces to find if the top most namespace is "std"
to determine if a move function is the std::move function.  This allows functions
like std::__1::move to also be treated a the move function.

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llvm-svn: 205784