Friendlier bzr+ssh errors for Launchpad

[John Arbash Meinel]

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I just tried to push to the wrong location and I got this:
% bzr push bzr+ssh://bazaar.launchpad.net/~bzr/bzr-cvsps-importer/trunk
bzr: ERROR: Generic bzr smart protocol error: <Fault 8002: 'error'>

versus

% bzr push sftp://bazaar.launchpad.net/~bzr/bzr-cvsps-importer/trunk
bzr: ERROR: Permission denied: "/~bzr/bzr-cvsps-importer/trunk": [Errno 13]
Directories directly under a user directory must be named after a project name
registered in Launchpad <https://launchpad.net/>.

Fault 8002: doesn't really help figure out what I did wrong, but the sftp error
message does.

I know there was quite a bit of work done for the sftp server to report nice
error messages. It would be nice if that could carry over to bzr+ssh.

John
=:->
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