[MERGE][0.14] Allow 'bzr push' to push onto existing dir

[Alexander Belchenko]

Alexander Belchenko has voted -0.
Status is now: Conditionally approved
Comment:
I'm try to test this patch and got this error:

C:\work\Bazaar\sandbox\setup.fixes>bzr push 
sftp://bialix@aaronbentley.com/~/repo/python2.5 --use-existing
bzr: ERROR: File exists: u'repo/python2.5/.bzr': Failure: unable to 
mkdir

See mailing list for details.

For details, see: 
http://bundlebuggy.aaronbentley.com/request/%3C45A3F5DA.6040007%40arbash-meinel.com%3E