Revert commit 145449 (ddunbar) since it is breaking the dragonegg buildbots.
Original commit message:
llvm-config: Replace with C++ version (was llvm-config-2).
 - Reapply of r144300, with lots of fixes/migration easement in between.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145582 91177308-0d34-0410-b5e6-96231b3b80d8
17 files changed