Rename a few icons left in rc files

src/kmplayerui.rc

@@ -64,10 +64,10 @@
   </Menu>
 </MenuBar>
 <ActionProperties>
-  <Action name="new_window" icon="window_new"/>
+  <Action name="new_window" icon="window-new"/>
-  <Action name="play" icon="player_play"/>
+  <Action name="play" icon="media-playback-start"/>
-  <Action name="pause" icon="player_pause"/>
+  <Action name="pause" icon="media-playback-pause"/>
-  <Action name="stop" icon="player_stop"/>
+  <Action name="stop" icon="media-playback-stop"/>
   <Action shortcut="F" name="view_fullscreen" />
   <Action shortcut="P" name="play" />
   <Action shortcut="Space" name="pause" />