In r149662, setDiagnosticMapping was modified to not allow warnings mapped to 
MAP_ERROR to be remapped to MAP_WARNING.  These new APIs are being added to 
allow the diagnostic mapping's "no Werror" bit to be set, and potentially 
downgrade anything already mapped to be a warning.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150001 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed