[Gpremacy-general] Changed Splash Screen

[Chris Jones]

I changed the splash screen code to do two things.  One, be time based 
and remove the Ok button.  Two, use a .png directly instead of a .xpm. 
I have removed the .xpm file.  I did this by looking at how other 
programs do this and borrowing their code.

I must say it is pretty cool now!