The ros-comm recipes are updated to 1.9.48 to be in line with
https://github.com/ros/rosdistro/blob/4551e7c32d1b34984410b79bc0ec36afe3d3d245/hydro/release.yaml.
The previously applied patches have been included in 1.9.48 and are
removed from the recipe and this repository.

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

As the license text of the xmlrpcpp changed, the license checksum
is adjusted.

For starting roscore, it requires a number of runtime dependencies.
At the moment, all runtime dependencies, even recursive runtime dependencies,
are added only in the roslaunch recipe. Hence, the recipe contains all
runtime dependencies.
At a later stage, one should move the recursive runtime dependencies into
the appropriate recipes.