Fix a bug which caused a mailer.py Exception when the revision has no modified paths.  While that's not the kind of revision we like to see in Subversion repositories, they have (and likely will again) happen. (See r803 in this repository, for example.)
Fix a bug which caused a mailer.py Exception when the revision has no
modified paths.  While that's not the kind of revision we like to see
in Subversion repositories, they have (and likely will again) happen.
(See r803 in this repository, for example.)

* tools/hook-scripts/mailer/mailer.py
  (get_commondir): Given a list of empty directories, return an empty
    common directory and an empty list of directories relative to that
    directory.

jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion