Add autorun hotkey

Tested while autorunning:
- getting knocked out
- breaking legs
- running into water
- getting into and out of vehicles
- climbing a ladder
- dying
- antiTP enabled
- running up steep hills
- as player zombie

Everything works as expected. This does allow you to run up and down
pretty steep hills, but if you try to scale something too steep you will
break your legs as expected.

SQF/dayz_code/init/compiles.sqf

@@ -379,6 +379,12 @@ if (!isDedicated) then {
 		player setVariable ["DZE_Surrendered", false, true];
 		DZE_Surrender = false;
 	};
+	
+	autoRunOff = {
+		autoRunActive = 0;
+		terminate autoRunThread;
+		player playActionNow "Stop";
+	};
 
 	gear_ui_init = {
 		private["_control","_parent","_menu","_dspl","_grpPos"];

SQF/dayz_code/init/variables.sqf

@@ -835,4 +835,5 @@ if(!isDedicated) then {
 
 	DZE_SaveTime = 30;
 	Dayz_constructionContext = [];
+	autoRunActive = 0;
 };