goprotobuf: Tweak generated output to match gofmt exactly.
goprotobuf: Tweak generated output to match gofmt exactly.

R=r
TBR=r
CC=golang-dev
http://codereview.appspot.com/4874046

skyportsystems/go-protobuf,francoishill/protobuf,fuchsia-mirror/third_party-github.com-golang-protobuf,hailocab/protobuf,jeremyletang/protobuf,golang/protobuf,velocity-toolkit/protobuf-1,trdata/protobuf,adnaan/protobuf,csuideal/protobuf,trdata/protobuf,ekle/protoc-gen-goweb_test,alskjstl/protobuf,tamird/protobuf-2,fuchsia-mirror/third_party-github.com-golang-protobuf,ekle/protoc-gen-goweb,jrbarron/protobuf,qinlodestar/protobuf,aoeu/protobuf,ArtemTeleshev/go-protobuf,linkedin-inc/protobuf,golang/protobuf,eduardiazf/protobuf,mwitkow-io/protobuf,jmptrader/protobuf-1,tamird/protobuf-2,daemonl/protobuf,kung-foo/protobuf,skyportsystems/go-protobuf