Driver/OptParser: Add a NoForward flag to prevent forwarding certain options to
GCC.
 - Mark -Xclang and -mlinker-version= with it for now, although I am sure there
   are more.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@111005 91177308-0d34-0410-b5e6-96231b3b80d8
7 files changed