[swift] cleanup functions

include/XPMPMultiplayer.h

@@ -272,6 +272,22 @@ const char *	XPMPMultiplayerInit(
  */
 const char *	XPMPMultiplayerEnable(void);
 
+/*
+ * XPMPMultiplayerDisable
+ *
+ * Disable drawing of multiplayer planes.  Call this from XPluginDisable to release multiplayer.
+ * Reverses the actions on XPMPMultiplayerEnable.
+ */
+void XPMPMultiplayerDisable(void);
+
+/*
+ * XPMPMultiplayerCleanup
+ *
+ * Clean up the multiplayer library. Call this from XPluginStop to reverse the actions of
+ * XPMPMultiplayerInit as much as possible.
+ */
+void XPMPMultiplayerCleanup(void);
+
 /*
  * XPMPLoadPlanesIfNecessary
  *