Driver: Add tests for -fprofile-arcs and -fno-profile-arcs

I tried to be lazy and get away with no test in r215051, but Chad
caught me :)

git-svn-id: http://llvm.org/svn/llvm-project/cfe/trunk@215053 91177308-0d34-0410-b5e6-96231b3b80d8