Add support for some more blame options.
Add support for some more blame options.

libgit2/rugged,libgit2/rugged,libgit2/rugged,saraid/rugged,tpickett66/rugged,Acidburn0zzz/rugged,Acidburn0zzz/rugged,tpickett66/rugged,saraid/rugged,saraid/rugged,tpickett66/rugged,Acidburn0zzz/rugged