The recipe python-pprint rdepends on python-io. As this was not reflected in
the oe-core repository, we added the dependency in genmsg.
Now after the commit abe7bf9992e298f1b53e790eee7b064a9e4e8589 in oe-core,
we can remove the runtime dependency in genmsg.

This commit resolves issue #54.

Signed-off-by: Lukas Bulwahn <lukas.bulwahn@oss.bmw-carit.de>

This commit provides a recipe for a core image to start roscore, and
also tunes the README.

After the release of ROS groovy, there is no strong reason to
continue to work on the cross-compilation of the previous ROS
version fuerte. Hence, this commit removes the initial
non-functioning recipe and the reference in the README file.

For cross-compiling ROS fuerte, the repository at
https://github.com/yida/yida-collections


might be a better starting point anyway.

Signed-off-by: Lukas Bulwahn <lukas.bulwahn@oss.bmw-carit.de>

adjusting the README; a first try for cross-compiling the cpp-common things; extending the install-fuerte script

adding the setuptools class from openembedded classic; adjusting the packages; adding legal statement

extending installation script so that it patches, compiles, installs and starts ROS; extending README