Disable EHFrameSupport in JITLink/RuntimeDyld on AIX
EH Frames aren't supported on AIX with the system compiler, but the definition of HAVE_EHTABLE_SUPPORT misses this which causes linking problems on AIX. This patch updates the definition of HAVE_EHTABLE_SUPPORT in both JITLink and RuntimeDyld.
Reviewers: sfertile, xingxue, hubert.reinterpretcase
Reviewed By: xingxue
Subscribers: hiraditya, jsji, llvm-commits
Differential Revision: https://reviews.llvm.org/D62203