CommitRules: be explicit about dependency ordering requirements

The webhooks will fall down if someone merges their dependencies on top of their own work, intermingling their work and the dependent work. The webhooks stop walking the commit list at the first merge commit or commit with a Depends: bugzilla mentioned in it, so there can't be any of "your" work that follows.

Fixes: #43 (closed)

Signed-off-by: Jarod Wilson jarod@redhat.com