Sending Xbee Message works (locally)

Signed-off-by: Simon Egli <simon.egli@tik.ee.ethz.ch>
Working with Statustext *slow*

Signed-off-by: Simon Egli <simon.egli@tik.ee.ethz.ch>
Not really working...

Signed-off-by: Simon Egli <simon.egli@tik.ee.ethz.ch>
It's now working! :)

Maybe still a lot to optimize, but basically working.
I believe problem lays in max packet size of mavlink

Signed-off-by: Simon Egli <simon.egli@tik.ee.ethz.ch>
dynamic length with pointer, still transmitting more than 6 bytes

Signed-off-by: Simon Egli <simon.egli@tik.ee.ethz.ch>
Added dangling changes.

As far as I remember this is a working version of the ip over mavlink module.
There *might* be a problem with big network packets.
But I think I solved it... :-/
Reformatted file, made it use Statustext as default

Added more flexibility to allow for people to use Statustext instead of our
custom Mavlink-Packet (less work to imlement mavslip).

Signed-off-by: Simon Egli <simon.egli@tik.ee.ethz.ch>