bump to 3.6.4
bump to 3.6.4

lookout/protobuffy,brianstien/protobuf,quixoten/protobuf,localshred/protobuf,ruby-protobuf/protobuf,brianstien/protobuf,quixoten/protobuf,lookout/protobuffy,ruby-protobuf/protobuf,localshred/protobuf