move some format group options around in the file.  Move NonNull group into
DiagnosticGroups.td, and add it as part of -Wformat (which gets it into -Wall).


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@72389 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed