At least, that's how I'm reading the buildbot docs at this time of night:
http://buildbot.net/buildbot/docs/current/Change-Filters.html
git-svn-id: svn://svn.open-ils.org/OpenSRF/trunk@2159
9efc2488-bf62-4759-914b-
345cdb29e865
####### FILTERS
from buildbot.schedulers.filter import ChangeFilter
-trunk_filter = ChangeFilter(branch="trunk")
+trunk_filter = ChangeFilter(branch=None)
rel_1_6_filter = ChangeFilter(branch="branches/rel_1_6")
rel_2_0_filter = ChangeFilter(branch="branches/rel_2_0")