Disable and XFAIL a test that never worked

-verify was simply ignored by the driver.

This commit fixes the RUN line and XFAILs the test, unblocking changes to ban
use of the driver in Sema tests and avoid problems like this.

git-svn-id: http://llvm.org/svn/llvm-project/cfe/trunk@199347 91177308-0d34-0410-b5e6-96231b3b80d8
Forbid driver use in Sema tests

This ports the last Sema tests over to use the frontend directly, and adds a
local lit substitution to disable inappropriate %clang usage under this
directory.

git-svn-id: http://llvm.org/svn/llvm-project/cfe/trunk@199348 91177308-0d34-0410-b5e6-96231b3b80d8