[CMake] Remove dependency on non-existing profile_rt-shared. Patch by Brad King.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@202041 91177308-0d34-0410-b5e6-96231b3b80d8
Don't make F_None the default.

This will make it easier to switch the default to being binary files.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@202042 91177308-0d34-0410-b5e6-96231b3b80d8