The catkin framework need some modification to support cross compiling
packages via yocto. When we want to upstream patches we need to provide
patches against the current groovy-devel branch. Use this branch as base
for our work to simplify the tests and to unify the developing process
of catkin.

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

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

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

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

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

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

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

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

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

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

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

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

* Use configuration options instead of patches
* Use relative paths in CMake installation files
* Use catkin class

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

removing RDEPENDS because we cannot check if it works as intended, as long as we are just compiling, but not running ROS.

gathering all packages in the meta package roscpp-core in the folder roscpp-core for better structuring

removing the ros prefix for the recipe of ROS' cpp_common package for uniformity and accepting the risk that the name cpp_common might clash when combined with other layers

adding the genmsg recipe, which is the first recipe that also creates some python modules and hence requires some more ingredients in the recipe

a metapackage is an empty package; switching from RDEPENDS to DEPENDS because it works, but it is not clear if that is really what I intend to express

adding the rostime recipe that relies on ros-cpp-common, trying to model the dependency of two ROS packages as dependency of two bitbake recipes

patching catkin to remove assertion for rt-library (this must revisited at some later point again when we have a better understanding of the issue.)

removing alternative recipe for catkin-native because using catkin and BBCLASSEXTEND+=native does the job for now