Merging r245902:

Merging r245902:
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r245902 | hans | 2015-08-24 16:34:28 -0700 (Mon, 24 Aug 2015) | 3 lines

Revert r245355 "Release script: correctly symlink clang-tools-extra into the build (PR22765)"

This worked with the CMake build but broke the Autoconf one.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/branches/release_37@245903 91177308-0d34-0410-b5e6-96231b3b80d8