Atomatic remote stacking ala Launchpad

[Ivan Sagalaev]

Hello!

Robert Collins and Ian Clatworthy have explained to me a feature of 
Launchpad where branches pushed there are not transmitted over the 
network completely but magically created as stacked.

I wonder if it's possible to do the same thing on our company's bzr 
server.  For now we encourage people to create shared repos for their 
projects and keep all branches within them. I'm not sure if it saves 
only disk space on the server or also saves traffic when someone pushes 
a local branch into a remote shared repo. If the branch is still 
transmitted completely then that feature with remote stacking can be a 
time-saver.