[MERGE] [#221461] Make 'bzr push --quiet' more quiet.

[Ian Clatworthy]

Ian Clatworthy has voted approve.
Status is now: Semi-approved
Comment:
I suspect conflicting tags ought to still be a warning and therefore 
still output if --quiet is given. That doesn't impact this patch though.

For details, see: 
http://bundlebuggy.aaronbentley.com/project/bzr/request/%3C49AD24F3.9090906%40gmail.com%3E
Project: Bazaar