add extern interface to get the .so binding from ffi
add extern interface to get the .so binding from ffi

film42/protobuf,zanker/protobuf,ruby-protobuf/protobuf,brianstien/protobuf,quixoten/protobuf,brianstien/protobuf,localshred/protobuf,lookout/protobuffy,quixoten/protobuf,localshred/protobuf,zanker/protobuf,ruby-protobuf/protobuf,film42/protobuf,lookout/protobuffy