(svn r11832) -Codechange: get rid of (quite) some VARDEFs.

src/ai/ai.cpp

@@ -11,6 +11,9 @@
 #include "ai.h"
 #include "default/default.h"
 
+AIStruct _ai;
+AIPlayer _ai_player[MAX_PLAYERS];
+
 /**
  * Dequeues commands put in the queue via AI_PutCommandInQueue.
  */

src/ai/ai.h

@@ -36,8 +36,8 @@ struct AIStruct {
 	uint tick;              ///< The current tick (something like _frame_counter, only for AIs)
 };
 
-VARDEF AIStruct _ai;
-VARDEF AIPlayer _ai_player[MAX_PLAYERS];
+extern AIStruct _ai;
+extern AIPlayer _ai_player[MAX_PLAYERS];
 
 // ai.c
 void AI_StartNewAI(PlayerID player);