gnome-background-properties i18n support

[Thomas Wood <thos gnome org>]

I recently made a patch for gnome-background-properties to allow it to
correctly load i18n data from XML files, and use the current locale.

This all works fine, with the exception that when data is loaded from
the system XML files (which describes all the pre-installed
backgrounds), only the current locale is copied to the user's home
directory. This isn't a problem unless you change locale sometime after
you've loaded the system XML file. Implementing copying all the locale
information to the users home directory would require a lot more work to
gnome-background-properties. Also, as pointed out by dobey, the name
data could possibly be user edited, so should it really be changed by
the system when the user changes locale?

Otherwise, there may still be no i18n support in gnome-background-
properties when 2.10 is released, which would mean the i18n work on the
gnome-backgrounds module would be completely wasted, as it would have to
be removed from the final build.

-Thomas