string freeze break

["Ray Strode" <halfline gmail com>]

Hi guys,

Brian Cameron spent some time updating the GDM documentation recently,
and during that update he went through and added a number of TODO
items for fleshing the docs out.  I since then tried to address the
majority of those todo items here:

http://www.gnome.org/~halfline/docs.patch

and would like to get the changes integrated into the source tree.  Sound good?

--Ray