On single threaded systems, turn mutexes into nops

http://reviews.llvm.org/D3386


git-svn-id: https://llvm.org/svn/llvm-project/libcxxabi/trunk@208135 91177308-0d34-0410-b5e6-96231b3b80d8
6 files changed
tree: 2bf957338933bedfc220172a30a30ac8e65958d3
  1. CREDITS.TXT
  2. LICENSE.TXT
  3. include/
  4. lib/
  5. src/
  6. test/
  7. www/