randr: unexport and document RROutputInit()

Not used by any external drivers, so no need to keep it exported.

Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>

randr/randrstr.h

@@ -650,12 +650,6 @@ extern _X_EXPORT Bool
 extern _X_EXPORT void
  RROutputDestroy(RROutputPtr output);
 
-/*
- * Initialize output type
- */
-extern _X_EXPORT Bool
- RROutputInit(void);
-
 /*
  * Initialize output type error value
  */

randr/randrstr_priv.h

@@ -351,4 +351,11 @@ void RROutputSetSubpixelOrder(RROutputPtr output, int order);
  */
 void RRDeliverOutputEvent(ClientPtr pClient, WindowPtr pWin, RROutputPtr output);
 
+/*
+ * Initialize output resource type
+ *
+ * @return TRUE on success
+ */
+Bool RROutputInit(void);
+
 #endif /* _XSERVER_RANDRSTR_PRIV_H_ */