Consolidate DZE_ActionInProgress and r_action_count to one variable

There is no point in having two variables for the same purpose.

It is also pointless to keep an action count tally like r_action_count
was doing, since it is only ever checked for being 0 or 1. Any count
higher or lower than that is irrelevant.

I will make this change in vanilla too.

SQF/dayz_code/Configs/CfgMagazines/Magazines/Magazines.hpp

@@ -3,7 +3,7 @@
 #define COMBINE_MAG class CombineMag\
 {\
 	text = $STR_MAG_COMBINE;\
-	script = "spawn player_combineMag; r_action_count = r_action_count + 1;";\
+	script = "spawn player_combineMag;";\
 };
 
 #include "9x18.hpp"			//Makarov