#286035 follow-up by maartenvg: Fix problem with contrib updates not firing unless system update exists.
#286035 follow-up by maartenvg: Fix problem with contrib updates not firing unless system update exists.

edutrul/social-web,OccupyWallStreet/streetnet,joshkoenig/golden-god-demo,joshkoenig/golden-god-demo,brainhell/drupalglass,rmcveigh/frontend-dev,edutrul/social-web,lincgr/Prueba,lincgr/Prueba,rmcveigh/frontend-dev,joshkoenig/golden-god-demo,brainhell/drupalglass,OccupyWallStreet/streetnet,OccupyWallStreet/streetnet,edutrul/social-web,lincgr/Prueba,brainhell/drupalglass,joshkoenig/golden-god-demo,brainhell/drupalglass,edutrul/social-web,joshkoenig/golden-god-demo,joshkoenig/golden-god-demo,rmcveigh/frontend-dev,brainhell/drupalglass,lincgr/Prueba,edutrul/social-web,joshkoenig/golden-god-demo,OccupyWallStreet/streetnet