bump libgit2 to 2ba55c
bump libgit2 to 2ba55c

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