ros_control hasn't been released yet for indigo, which is blocking indigo
release of gazebo_ros_pkgs. It builds on my saucy machine, so I think it
may be close to ready.

Here's a relevant ticket.
https://github.com/ros-controls/ros_control/issues/152

We are thinking about splitting gazebo_ros_pkgs into separate git
repositories to simplify the release process for gazebo_msgs, gazebo_ros,
and gazebo_plugins.
https://github.com/ros-simulation/gazebo_ros_pkgs/issues/179

That is all.

Steve