Do not collapse buildrequests with different properties.

buildbot/osuosl/master/master.cfg

diff --git a/buildbot/osuosl/master/master.cfg b/buildbot/osuosl/master/master.cfg
index fe0571b..c10158f 100644
--- a/buildbot/osuosl/master/master.cfg
+++ b/buildbot/osuosl/master/master.cfg
@@ -36,7 +36,8 @@
 
 ##from buildbot.changes.pb import PBChangeSource
 from zorg.buildbot.changes.llvmgitpoller import LLVMPoller
-from zorg.buildbot.process.buildrequest import collapseRequests
+from zorg.buildbot.process import buildrequest
+reload(buildrequest)
 
 c['change_source'] = []
 # TODO: Do we want to support a push mode for the changes? Probably not.
@@ -46,7 +47,7 @@
                workdir='gitpoller-workdir',
                pollinterval=120))
 
-c['collapseRequests'] = collapseRequests
+c['collapseRequests'] = buildrequest.collapseRequests
 
 ####### BUILDERS