Support lit fixes for PR8199

Replace "clang++" with "clang\+\+" because we have to escape regexp
special characters now.  This is in preparation for changes to lit to
fix PR8199.  Tests will fail until the lit part gets committed.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@122753 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed