Add scalable versions of the Oxygen icons.

This is required by its license. They aren't actually used by KeePassX.

Closes #70

COPYING

@@ -131,6 +131,7 @@ Files: share/icons/application/*/actions/application-exit.png
        share/icons/application/*/status/dialog-error.png
        share/icons/application/*/status/dialog-information.png
        share/icons/application/*/status/dialog-warning.png
+       share/icons/svg/*.svgz
 Copyright: 2007, Nuno Pinheiro <nuno@oxygen-icons.org>
            2007, David Vignoni <david@icon-king.com>
            2007, David Miller <miller@oxygen-icons.org>
@@ -138,7 +139,7 @@ Copyright: 2007, Nuno Pinheiro <nuno@oxygen-icons.org>
            2007, Kenneth Wimer <kwwii@bootsplash.org>
            2007, Riccardo Iaconelli <riccardo@oxygen-icons.org>
 License: LGPL-3+
-Comment: from Oxygen icon theme
+Comment: from Oxygen icon theme (http://www.oxygen-icons.org/)
 
 Files: share/icons/database/C62_Tux.png
        share/icons/database/C63_Feather.png