Rename bit_RDRAND to bit_RDRND to match GCC's version of this header.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@218823 91177308-0d34-0410-b5e6-96231b3b80d8
Add the various signature macros.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@218824 91177308-0d34-0410-b5e6-96231b3b80d8
Fix trailing commas in AMD define.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@218825 91177308-0d34-0410-b5e6-96231b3b80d8
Test case for my r218780 patch.
Suggested by Richard Smith.
rdar://18508589.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@218830 91177308-0d34-0410-b5e6-96231b3b80d8