Re-examine autopilot VS property rule use

[wlbragg]

While working on the AirCrane, I refreshed my memory on using autopilot VS property rules and after examining some of the code for the c172p I noticed a few issues that we should address in order to leave a good base or road map for others using the c172p as the defacto "how to" when designing their own code.

Examples...
control-lock and yoke-cord should probably be moved to prop rule VS autopilot. There may be some prop rule driven code that should be moved to autopilot. The "damage" code may be one in question. Although most of the stuttering during a damage event id is due to texture loading.