The script is called EasyWindowDrag_(KDE), and here is a cut and pasted description of what it does:
"
1) Hold down the ALT key and LEFT-click anywhere inside a window to drag it to a new location;
2) Hold down ALT and RIGHT-click-drag anywhere inside a window to easily resize it;
3) Press ALT twice, but before releasing it the second time, left-click to minimize the window under the mouse cursor, right-click to maximize it, or middle-click to close it.
"
The problem I have with it, is that for some programs - in my case, it's largely Lightroom (and some Photoshop) - the alt key is used for other things. Given that XMBC already has capability to have things work in only certain applications, it would be great if XMBC could gain such functionality.. Or maybe it already has, but I haven't noticed it??
#3 might not be possible, but that part is not that important to me anyways.. (Perhaps also because I forgot about it until now?

Although numbers 1 and 2 would seem to be right up XBMC's ally. I really hope it could, because the ALT issue is a constant major pain in the butt when in the Lightroom application. EWD has a 'pause' feature, but I switch around a lot so it just doesn't work out.
Anyways.. MANY thanks if it could be added, or if it already is. And thanks a ton for this wonderful lightweight application!