Add AVX-512 feature flag and knl cpu to clang.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@188756 91177308-0d34-0410-b5e6-96231b3b80d8
Revert r188756 because some other changes snuck in with it.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@188757 91177308-0d34-0410-b5e6-96231b3b80d8
Add AVX-512 feature flag and knl cpu to clang.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@188758 91177308-0d34-0410-b5e6-96231b3b80d8
[autotools->cmake] Added support for creating the clang driver plist for OS X.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@188759 91177308-0d34-0410-b5e6-96231b3b80d8
[autotools->cmake] Move add_subdirectory(test) inside CLANG_INCLUDE_TESTS to match the behavior of the LLVM where LLVM_INCLUDE_TESTS controls whether tests is included.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@188760 91177308-0d34-0410-b5e6-96231b3b80d8
Change 'avx512' to 'avx-512' to match llvm backend.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@188762 91177308-0d34-0410-b5e6-96231b3b80d8
[autotools->cmake] Added support for building clang with an order file.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@188763 91177308-0d34-0410-b5e6-96231b3b80d8
Rename __AVX512__ to __AVX512F__

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@188764 91177308-0d34-0410-b5e6-96231b3b80d8