Using GSettings

[Richard Hughes <hughsient gmail com>]

I'm keen on getting gnome-color-manager converted to GSettings.
Unfortunately this means a dep on GConf 2.31.1 and Gio 2.25.0 -- which
might be difficult for some people.

Are the latter two available in the Ubuntu and Suse development
repositories yet? If not, I'll push a branch and we can merge it in a
couple of weeks / months.

Richard.