testing switch to external rgbd_launch
added tf prefix resolution
merging with hydro-devel
deprecation notices about the move of common launch files to rgbd_launch
added deprecation notice about rgb.launch
device.launch is now internal
modified the top level file to use internal file names
added sw_registration and hw_registration flags
merging with ros-drivers/openni_launch
Merge pull request #8 from piyushk/external_rgbd_launch

switch to rgbd_launch