Code review comment for lp:~albaguirre/mir/fix-1465883

@Daniel,

As others have said, yes there are protobuf issues preventing loading two versions in the same process (for more comments see Chris branch https://code.launchpad.net/~raof/mir/input-methods-can-specify-foreign-parents/+merge/258001)

Loading two versions of protobuf in the same process is more common than is apparent at first glance, because the mesa client platform module links against libmirclient.

Indeed, just by probing the modules, a client that links against libmirclient8, will end up loading libmirprotobuf.so.1 since the module will load libmirclient9 (which is linked to libmirprotobuf.so.1)