cleanup radosgw dependencies

 * move Ceph_file spaceship up the chain to avoid circular dependency
 * move the rest of package->file requires into the main chain
 * drop if(enabled): don't include the class if you don't need it
 * typos: s3gw.fcgi.erb 766->755, keyring 650->640, radiosgw->radosgw
 * drop the completed ssh, cinder, and glance TODO comments
 * syntax checker warnings fixes