Use plugins.h.

src/plugins.c

@@ -6,20 +6,13 @@
  * This file is part of partiview, released under the
  * Illinois Open Source License; see the file LICENSE.partiview for details.
  */
-extern void kira_parti_init(void);
-extern void warp_init(void);
-extern void parti_ieee_init(void);
-extern void parti_model_init(void);
-extern void conste_init(void);
-
-extern void pp_spi_init(void);
-extern void nethack_init(void);
-extern void sixdof_init(void);
 
 #ifdef WIN32
 # include "winjunk.h"
 #endif
 
+#include "plugins.h"
+
 #include <stdlib.h>
 #include "specks.h"
 #include "partiviewc.h"