just reorder a few members of pipe_winsys, update comments

src/mesa/pipe/p_winsys.h

@@ -60,6 +60,12 @@ struct pipe_buffer_handle;
 
 struct pipe_winsys
 {
+   /** Returns name of this winsys interface */
+   const char *(*get_name)( struct pipe_winsys *sws );
+
+   /** Wait for any buffered rendering to finish */
+   void (*wait_idle)( struct pipe_winsys *sws );
+
    /**
     * Do any special operations to ensure frontbuffer contents are
     * displayed, eg copy fake frontbuffer.
@@ -147,13 +153,6 @@ struct pipe_winsys
 			      unsigned long size, 
 			      void *data);
 
-
-   /** Wait for any hw swapbuffers, etc. to finish */
-   void (*wait_idle)( struct pipe_winsys *sws );
-
-   /** Queries */
-   const char *(*get_name)( struct pipe_winsys *sws );
-
 };