The native packages are not required anymore, because the needed
python scripts during compile time are also provided by the
cross-compiled packages and the python scripts are platform
independent. Only the catkin package is provided as native package.

The gencpp recipe is updated to 0.4.14 to be in line with
https://github.com/ros/rosdistro/blob/4551e7c32d1b34984410b79bc0ec36afe3d3d245/hydro/release.yaml.
The previously applied patch has been included in 0.4.14 and is
removed from the recipe and this repository.
The PR variable is reset.

Signed-off-by: Stefan Herbrechtsmeier <stefan@herbrechtsmeier.net>

Signed-off-by: Stefan Herbrechtsmeier <stefan@herbrechtsmeier.net>

To update to the hydro release version, the gencpp patch required
some minor adjustments.

The python script path for gen_cpp.py is hard coded in the CMake
file and doesn't work during cross compile. Setup it via find_program
during runtime.

This closes #91 with the following error:
*** No rule to make target `/usr/lib/gencpp/gen_cpp.py', needed by
`devel/include/roscpp/Logger.h'.  Stop

Signed-off-by: Stefan Herbrechtsmeier <stefan@herbrechtsmeier.net>

All ROS packages with install tools in the bin directory or install
python code with is used by other packages should be used as native
version. Adapte the DEPENDS accordingly.

Signed-off-by: Stefan Herbrechtsmeier <stefan@herbrechtsmeier.net>

Signed-off-by: Stefan Herbrechtsmeier <stefan@herbrechtsmeier.net>