Adds a stub macro AI_LOCATION to the ai_controller.

This is called in LoW::7 and will be implemented later.

data/core/macros/ai_controller.cfg

@@ -499,7 +499,7 @@
                     type=objective
 
                     # remove this line to enable the option...
-                    disabled=yes
+                    #disabled=yes
 
                     [ai]
                         [protect_location]
@@ -1023,3 +1023,7 @@ Behavior: $ai_controller.side_$ally_side|_current_settings.currently_doing_behav
         [/else]
     [/if]
 #enddef
+
+# A stub for scenario 7 of LoW
+#define AI_LOCATION ID NAME RANGE X Y 
+#enddef