Visual cure of multiple versions

[Karl Relton <karllinuxtest relton ntlworld com>]

Hi friends

In bugzilla there are several bug(enhancements) asking for a simple
visual cue to be shown in thumbnail mode that a photo has multiple
versions.

One example is:

http://bugzilla.gnome.org/show_bug.cgi?id=381332

Recently I attached simple patch that gives a simple (but in my view
effective) visual indication.

Any feedback?