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/Items/Generator.hpp

@@ -15,7 +15,7 @@ class ItemGenerator : CA_Magazine
 		class Build
 		{
 			text = $STR_ACTION_BUILD;
-			script = "spawn player_build;"; //r_action_count = r_action_count + 1; set in sqf
+			script = "spawn player_build;";
 			require[] = {"ItemToolbox"};
 			consume[] = {"ItemGenerator"};
 			create = "Generator_DZ";