Split ManualControlCommand and ManualControlSettings UAVOs into
ControlCommand, ControlCommandSettings, RCTransmitterInput, and
RCTransmitterSettings.
Upgraded targets to support new ControlCommand UAVOs.
Added support for new UAVOs to GCS. There is no new
functionality, although in configinputwidget.h some of the new
UAVO data structs were not declared class memebers.
Changed the XML formatting to make it easier to add new control
channels.