[Success!] [MERGE] Fix bug #346431 by allowing log._filter_revisions_touching_file_id to be used on an empty branch

[Bundle Buggy]

This change has been merged.
Previous status: Approved

For details, see: 
http://bundlebuggy.aaronbentley.com/project/bzr/request/%3Cm2iqm0h7b8.fsf%40free.fr%3E
Project: Bazaar