Usage: from clang/test, 'make -f ../utils/test/Makefile.multi'
Pros: About 20% faster than the Makefile based version on my 8 core
box (way faster on Windows I imagine, if it works).
Cons: Needs some cleanup. Ctrl-C works quite poorly on Darwin; more
Python's fault than mine.
Future: Support config definitions so we can use this for running LLVM
tests instead of dejagnu. Parallel testing goodness? Indeed.
llvm-svn: 66293