Makes all global variables handled by the GLOB controller (#13152)

* Handlers converted, now to fix 3532 compile errors

* 3532 compile fixes later, got runtimes on startup

* Well the server loads now atleast

* Take 2

* Oops

code/modules/modular_computers/file_system/computer_file.dm

@@ -1,4 +1,4 @@
-var/global/file_uid = 0
+GLOBAL_VAR_INIT(file_uid, 0)
 
 /datum/computer_file
 	var/filename = "NewFile" 								// Placeholder. No spacebars
@@ -12,8 +12,8 @@ var/global/file_uid = 0
 
 /datum/computer_file/New()
 	..()
-	uid = file_uid
-	file_uid++
+	uid = GLOB.file_uid
+	GLOB.file_uid++
 
 /datum/computer_file/Destroy()
 	if(!holder)