#173 Patch trying to add startup-notification support

[PCMan]

This is a patch file trying to add startup notification
support to icewm (optional, can be totally turned off
in configure).
Most of the startup notification code are ported from
metacity. However, the patch is not completed, and only
has partially effect.
It've added startup notification support correctly, but
I don't know how to change the cursor to "busy cursor"
under icewm, and this requires some work by icewm team.
Other parts can work fine. From the debug message in
console, you can see the startup notification code
works, and the only thing it lacks is there should be
some visual feedback to the user. I think icewm team
can do this. So I provide this incomplete patch.

The best place to provide visual feedback is this function:
static void update_startup_feedback (SNData *sn_data);

What icewm team needs to do is adding visual feedback
here, and startup notification works.

Hope startup notification can be supported in the next
release of icewm, with this patch.

Thanks for the great window manager.

More info about startup-notification can be found on
FreeDesktop.org.
http://freedesktop.org/wiki/Standards

[PCMan]

the patch file