Patched libsounds in g-c-c 2.20

[Claude Paroz <claude 2xlibre net>]

Hi,

We found some weird strings not in upstream when translating
gnome-control-center for Ubuntu.
It appears that libsounds (svn:external) in the GNOME 2.20 g-c-c tarball
has been patched.
http://bugzilla.gnome.org/show_bug.cgi?id=479970

This is not only a string freeze breakage, but a serious concern about
security of official GNOME releases.

Please, do all you can to prevent this sort of things to happen again.

Claude