[MERGE][0.91][Bug 133965] PathNotChild, port mismatch with "bzr info" for bzr:// smartserver

[Martin Pool]

Martin Pool has voted tweak.
Status is now: Conditionally approved
Comment:
That looks nice.  However it occurs to me that we might want to keep 
more than just a default port for a protocol.  Maybe the info should be 
a dict containing a default_port?

For details, see: 
http://bundlebuggy.aaronbentley.com/request/%3C20070912022241.GC15187%40steerpike.home.puzzling.org%3E