use an extra function for setfeigndeath()
like it's done with setfeared already..
allow to apply feigndeath on creatures too
avoid moving of creatures with feign death applied
and start attacking last victim when feigndeath disappears
* Create new monster move field in Creature class and use it in all cases when expected use MONSTER_MOVE_* flags.
* Store and use MOVEMENTFLAG_* values in field in MovementInfo structure of Player class.
* Cleanups and fix related code.
NOTE: DB in creature_addon store values similar MONSTER_MOVE_* flags, scritps also expected set only this flags.
Including fix _SCallback for 3 params, triggred mode correct call for .cast back and .cast target.
Remove outdated code for support old 19421 (and ranks) implementation in client data.
