Revert 73074 and 73099 because Windows doesn't have POSIX
regular expressions.  We will add an OpenBSD implementation
and re-apply ASAP.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73138 91177308-0d34-0410-b5e6-96231b3b80d8
9 files changed