Keep comments when emitting new pb files. Also fix the whitespace so the diffs are nice :-)
Keep comments when emitting new pb files. Also fix the whitespace so the diffs are nice :-)

sambooo/pachyderm,ShengjieLuo/pachyderm,sambooo/pachyderm,ShengjieLuo/pachyderm,ShengjieLuo/pachyderm,sambooo/pachyderm