[Fedora-spins] XFCE significantly larger for f21

[Bruno Wolff III]

I base games off of xfce and games is oversize right now and needs to be 
fixed by beta. Part of this is that xfce got 200MB bigger. I did a quick 
look at comps and the ks files and didn't see anything obvious that 
would make it that much larger. So I'm wondering if it should really be 
smaller and I can wait before cutting games or if I going to need to 
cut something in the games spin to get it back under 4GB?