some minor Core pruning

[Bill Nottingham]

Bill Nottingham (notting at redhat.com) said: 
> libIDL-0:0.8.6-5.src
> gnome-mag-0:0.12.5-1.src
> gdm-1:2.15.3-7.src
> gnome-session-0:2.15.1-4.src
> librsvg2-0:2.15.0-1.src

All being fixed.

Bill