[MERGE/RFC] Merge in clean-tree

[Ian Clatworthy]

Ian Clatworthy has voted tweak.
Status is now: Conditionally approved
Comment:
Assuming Aaron agrees to the copyright reassignment, this looks good to 
merge. I'd like two doc tweaks:

1. An item added to NEWS under New Features.
2. The help expanded to explain handling of symlinks (as covered by 
test_symlinks).

For details, see: 
http://bundlebuggy.aaronbentley.com/project/bzr/request/%3C1235144084.30594.14.camel%40charis.vernstok.nl%3E
Project: Bazaar