[bug-gsrc] Update Bazaar, add Python (dependency)

[Luke Shumaker]

This updates to the latest non-beta release of Bazaar, and adds Python,
which is needed by Bazaar.

For Bazaar, GPG currently gives back a message about the public key not
being found.

For Python, I cannot figure out how to fetch the sig file (see the
Makefile for info).  The public keys for Python are at
<http://www.python.org/download/#pubkeys>

-- 
~ LukeShu
http://lukeshu.ath.cx

bazaar-python.patch
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