Fix points rectangle extractor groovy catkin

this PR is a patch to avoid the bug mentioned here https://github.com/jsk-ros-pkg/jsk_common/issues/331

this is just a hack and we should fix roseus.cmake.

* call generate_messages at the end of catkin.cmake and before `catkin_package()`.

If we call that function before using `${catkin_*}` variables, they will be empty.