Support correct build:
1. Capture the ENABLE_THREADS configure variable in Makefile.config
2. Use ENABLE_THREADS to avoid building ParallelJIT if threads are not
   present.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28609 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed