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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@188382 91177308-0d34-0410-b5e6-96231b3b80d8

Conflicts:

	docs/Extensions.rst

Change-Id: Ie1f0acf4c3f943bcbe46a1f4c365a8d9ccff75d5