Updated packages MAVLink
Added message handling, not compile-tested yet
Add support for exotic UART rates, add support to be run on /dev/console (e.g. ODROID).
added imu, imu_raw and magnetic compass message; it compiles, but I couldn't test it
formatted to ros code style
Merge pull request #2 from markusachtelik/next

added Imu (+raw) message and magnetic compass message