Remove warnings.
deprecate ghci.sh.
warnings, wibbles.
zero-out mavlink array at the beginning.
data rate: clean up deprecated stuff for now.
start refactoring to pack commsec packets.
gcs: deprecate datarate stuff.
gcs: packing commsec arrays (initial commit where we separate packing array and sending array.
formatting wibbles.
checkpoint: reworked types to contain hard/soft realtime (still unused).
packed mavlink: seems to work.
  -- still need to handle hard real-time msgs.
commsec packing: ready for testing.