Fix test.

With -### clang return 0, so we have to use FileCheck to see if there was an
error.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@191923 91177308-0d34-0410-b5e6-96231b3b80d8
Fix the test in clang_f_opts.c to fail on unknown options.

Also fix options that were broken in the previous refactorings.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@191925 91177308-0d34-0410-b5e6-96231b3b80d8
Don't complain about -fuse-ld=gold (cf r191429).

(There's a real implementation for this flag in review.)



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@191926 91177308-0d34-0410-b5e6-96231b3b80d8