- Made dock/clip steal appicons of applications that were started from a

shell/xterm or from the main menu, if there is a docked appicon of that
  class that is not running at the time the app is launched.
- Added animation to show that the appicon was stolen by the dock (the way
  NEXTSTEP did - map an appicon as it normally would have been, then slide it
  to the position the docked appicon is).
- Updated the animation constants for scrolling/sliding/shading to better
  adapt to newer/faster machines. Also used wusleep(10) when the delay was 0
  to get rid of the jerky animation when there was no delay.

src/appicon.c

@@ -277,10 +277,6 @@ drawCorner(WIcon *icon)
 void
 wAppIconMove(WAppIcon *aicon, int x, int y)
 {
-    WApplication *app;
-
-    app = wApplicationOf(aicon->icon->owner->main_window);
-
     XMoveWindow(dpy, aicon->icon->core->window, x, y);
     aicon->x_pos = x;
     aicon->y_pos = y;