COMMAND_ACK - remove WIP on extensions. Clarify use (mavlink#1504)

WIP: LINK_NODE_STATUS

DON'T DELETE, used in old trees of ardupilot

DON'T DELETE, used in older trees of ardupilot

DON'T DELETE, used in old trees in ardupilot

Add support for MAV_CMD_NAV_DELAY in common.xml (mavlink#543)

Fixed c include directory to be consistent with prev. versions.

Updated version to 1.0.10

Version bump.

Adjusted quadrotor swarm message