Remove explicit line numbers from update rule reports.

Additions/removals by other rules in the set will almost certainly
invalidate these.  Reporting the block and file is the best we can
reasonably do.

OpenRA.Mods.Common/UpdateRules/Rules/DefineSquadExcludeHarvester.cs

@@ -26,34 +26,23 @@ namespace OpenRA.Mods.Common.UpdateRules.Rules
 			}
 		}
 
-		readonly List<MiniYamlNode.SourceLocation> locations = new List<MiniYamlNode.SourceLocation>();
-
-		public override IEnumerable<string> BeforeUpdate(ModData modData)
-		{
-			// Reset state for each mod/map
-			locations.Clear();
-			yield break;
-		}
+		readonly List<string> locations = new List<string>();
 
 		public override IEnumerable<string> AfterUpdate(ModData modData)
 		{
 			if (locations.Any())
 				yield return "The automatic exclusion of harvesters from AI squads has been removed.\n"
 					+ "You may wish to add your harvester-type actors to `ExcludeFromSquads` under `UnitCommonNames`\n"
-					+ "at the following locations.\n"
-					+ UpdateUtils.FormatMessageList(locations.Select(l => l.ToString()));
+					+ "on the following definitions:\n"
+					+ UpdateUtils.FormatMessageList(locations);
+
+			locations.Clear();
 		}
 
 		public override IEnumerable<string> UpdateActorNode(ModData modData, MiniYamlNode actorNode)
 		{
 			foreach (var hackyAINode in actorNode.ChildrenMatching("HackyAI"))
-			{
-				var commonNamesNode = hackyAINode.LastChildMatching("UnitsCommonNames");
-				if (commonNamesNode != null)
-					locations.Add(commonNamesNode.Location);
-				else
-					locations.Add(hackyAINode.Location);
-			}
+				locations.Add("{0} ({1})".F(hackyAINode.Key, hackyAINode.Location.Filename));
 
 			yield break;
 		}