Add logging to failed GC's that result in a del() call

You can view these logs in-game using a debug verb. You have to use the debug-verbs command to see it.

Removed the dellogging compile option. If this is a problem, speak up, but for most users, this new functionality is more useful.

code/modules/admin/verbs/debug.dm

@@ -1137,3 +1137,15 @@ var/global/list/g_fancy_list_of_safe_types = null
 			usr << list2text(clients,",")
 		if("Joined Clients")
 			usr << list2text(joined_player_list,",")
+
+/client/proc/cmd_display_del_log()
+	set category = "Debug"
+	set name = "Display del() Log"
+	set desc = "Displays a list of things that have failed to GC this round"
+
+	var/dat = "<B>List of things that failed to GC this round</B><BR><BR>"
+
+	for(var/path in garbage.logging)
+		dat += "[path] - [garbage.logging[path]] times<BR>"
+
+	usr << browse(dat, "window=dellog")

code/modules/admin/verbs/mapping.dm

@@ -148,6 +148,7 @@ var/intercom_range_display_status = 0
 	src.verbs += /client/proc/print_pointers
 	src.verbs += /client/proc/count_movable_instances
 	src.verbs += /client/proc/SDQL2_query
+	src.verbs += /client/proc/cmd_display_del_log
 	//src.verbs += /client/proc/cmd_admin_rejuvenate
 
 	feedback_add_details("admin_verb","mDV") //If you are copy-pasting this, ensure the 2nd parameter is unique to the new proc!