[MERGE] Initial support for marking bugs as fixed using bzr

[Aaron Bentley]

Aaron Bentley has voted -0.
Status is now: Semi-approved
Comment:
This introduces ListOption, which breaks aliases.  See list.

For details, see: 
http://bundlebuggy.aaronbentley.com/request/%3C20070412211415.GD3524%40jameswestby.net%3E