Issue #1167996 by rocket_nova, Sheldon Rampton: Fixed UPGRADE.txt needs to say all D6 contrib modules need to be upgraded to their latest D6 versions before the D6->D7 update.
Issue #1167996 by rocket_nova, Sheldon Rampton: Fixed UPGRADE.txt needs to say all D6 contrib modules need to be upgraded to their latest D6 versions before the D6->D7 update.

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