nukes some unmanaged global variables (probably merge this fast as it touches a hundred+ files) (#2829)

* replacements

* indents

code/modules/gamemaster/actions/meteor_defense.dm

@@ -34,7 +34,7 @@
 		if(EVENT_LEVEL_MODERATE)
 			meteor_types = meteors_catastrophic.Copy()
 
-	direction = pick(cardinal) // alldirs doesn't work with current meteor code unfortunately.
+	direction = pick(GLOB.cardinal) // GLOB.alldirs doesn't work with current meteor code unfortunately.
 	waves = rand(5, 8)
 	switch(direction)
 		if(NORTH)
@@ -63,7 +63,7 @@
 		while(waves)
 			message_admins("[waves] more wave\s of meteors remain.")
 			spawn(1) // Dir is reversed because the direction describes where meteors are going, not what side it's gonna hit.
-				spawn_meteors(rand(8, 12), meteors_threatening, reverse_dir[direction])
+				spawn_meteors(rand(8, 12), meteors_threatening, GLOB.reverse_dir[direction])
 			waves--
 			sleep(30 SECONDS)
 		announcement = "The station has cleared the incoming debris."

code/modules/gamemaster/actions/surprise_meteor.dm

@@ -13,5 +13,5 @@
 /datum/gm_action/surprise_meteors/start()
 	..()
 	spawn(1)
-		spawn_meteors(rand(4, 8), meteors_normal, pick(cardinal))
-	message_admins("Surprise meteors event has ended.")
+		spawn_meteors(rand(4, 8), meteors_normal, pick(GLOB.cardinal))
+	message_admins("Surprise meteors event has ended.")