Split player_death into scheduled and unscheduled #1833

Death message was sometimes showing incorrectly due to spawn delay.

Also the sched_corpses two minute loop was occasionally deleting bodies
right away because bodyName setVariable was delayed by the time it took
PVDZ_plr_death to send (up to a few seconds). See #1825

SQF/dayz_code/system/BIS_Effects/init.sqf

@@ -33,7 +33,7 @@ BIS_Effects_startEvent = {
 			} count DZE_SafeZonePosArray;
 			player action ["getOut", (_this select 0)];
 			if (!_cancel && {!((_this select 0) iskindof "car")}) then {
-				[player, "explosion"] spawn player_death;
+				[player, "explosion"] call player_death;
 			};
 		};
 	};