Using new pluginlib macro
Changed robot model option in pr2_etherCAT node launch from -x to -r. New in groovy.
Merging from ROS_release_groovy but dismissing the changes, as they are not for fuerte

* ROS_release_groovy:
  Changed robot model option in pr2_etherCAT node launch from -x to -r. New in groovy.
  Using new pluginlib macro