MSE icons, added some transparancey to the XPMs

[Alan Horkan <horkana tcd ie>]

i touching up some of the icons i have drawn for my own use and adding
transparancey and while i was at i decided to add transparancy to some of
the MSE icons.  (edited using the GIMP)

I think someone mentioned that PNGs load faster than XPMs.
Are there any plans to switch entirely to PNGs?
(I know XPMs are text based and there might be advantages to using them
such as being able to use cvs diff).

the four icons are here in a tarball

http://www.maths.tcd.ie/~horkana/dia/
http://www.maths.tcd.ie/~horkana/dia/mse-transparent-xpms.tar

Sincerely
Alan