fix overzealous "ui" -> "plotinfo" replacement

some comments were just talking about the UI..

library/include/RemoteClient.h

@@ -46,7 +46,7 @@ namespace  DFHack
         CR_NOT_IMPLEMENTED = -1, // Command not implemented, or plugin not loaded
         CR_OK = 0,               // Success
         CR_FAILURE = 1,          // Failure
-        CR_WRONG_USAGE = 2,      // Wrong arguments or plotinfo state
+        CR_WRONG_USAGE = 2,      // Wrong arguments or ui state
         CR_NOT_FOUND = 3         // Target object not found (for RPC mainly)
     };
 

library/modules/Buildings.cpp

@@ -1219,7 +1219,7 @@ bool Buildings::constructWithFilters(df::building *bld, std::vector<df::job_item
         /* The game picks up explicitly listed items in reverse
          * order, but processes filters straight. This reverses
          * the order of filters so as to produce the same final
-         * contained_items ordering as the normal plotinfo way. */
+         * contained_items ordering as the normal ui way. */
         vector_insert_at(job->job_items, 0, items[i]);
 
         if (items[i]->item_type == item_type::BOULDER)

library/modules/Screen.cpp

@@ -83,7 +83,7 @@ namespace DFHack {
  * Screen painting API.
  */
 
-// returns plotinfo grid coordinates, even if the game map is scaled differently
+// returns ui grid coordinates, even if the game map is scaled differently
 df::coord2d Screen::getMousePos()
 {
     if (!gps)

plugins/stockpiles/StockpileSerializer.h

@@ -105,7 +105,7 @@ private:
   */
  void write();
 
- //  parse serialized data into plotinfo indices
+ //  parse serialized data into ui indices
  void read ();
 
  /**