Add a routine to ui_util.c that sets a window's icon pixmap to a 16x16
version of the 3D logo. Call the routine for each window that is created.
This has been tested with kwm and Sawfish (which expect a 16x16 icon), but
we may have to come up with a better solution for other window managers
(e.g. olwm and mwm).
Add a 3D exclamation point image. Replace the exclamation point and
Ethereal logo images used in simple_dialog() with their 3D counterparts.
Remove the old icons from the source distribution.
svn path=/trunk/; revision=4390