carto/protobuf @ fe2eef4bf414ebb352cf11bcec633f1fd46ec876

Feng Xiao 14be563f00 Down-integrate proto2 namespace fix.		%!s(int64=7) %!d(string=hai) anos
..
protobuf	14be563f00 Down-integrate proto2 namespace fix.	%!s(int64=7) %!d(string=hai) anos
__init__.py	786f80fe66 Add a modified patch from craigcitro@ to handle namespace sharing.	%!s(int64=10) %!d(string=hai) anos