remove depends to opencv2, since indigo depends on libopencv-dev, so we depends on cv_bridge whcih both hydro/indigo depends on it
add cmake_modules for indigo compile
disable collada_urdf_jsk_patch for indigo
use tgz to download source
update .travis.sh to disable -qq just a beginning (sometimes it fail to apt-get update or apt-get install python-rosdep, so we need to investigate that), also uses pip verison of rosdep for now
do not allow failure for indigo/deb
Merge pull request #556 from k-okada/support_indigo

re-enable indigo support