Re-enable m_private_run_lock changes from 179329, but only for Apple hosted builds so it doesn't break the buildbots. We will try and work the issues out in the Apple build before enabling this feature for everyone.



git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@179772 91177308-0d34-0410-b5e6-96231b3b80d8