Abstract methods in Branch

[Jelmer Vernooij]

Hi,

Since I would like to derive more classes from Branch then just
bzr's current _Branch for foreign branch support, I have worked on
making the distinction between Branch and _Branch a bit clearer:

* Rename _Branch to NativeBranch to more clearly indicate what it does
* Move some generic methods to Branch
* Add dummy methods that simply raise NotImplementedError for 
  all abstract methods in Branch

These changes are in the branch at
http://jelmer.vernstok.nl/bzr/foreignbranch

(based on Robert's integration branch)

Please comment and/or merge :-)

Cheers,

Jelmer

-- 
Jelmer Vernooij <jelmer at samba.org> - http://jelmer.vernstok.nl/
Currently Playing: Heather Nova - Widescreen
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