Ticket #3187: use Joliet and RockRidge in ISO9660 image view action.

Thanks Rafał Mużyło <galtgendo@o2.pl> for the idea.

Signed-off-by: Andrew Borodin <aborodin@vmail.ru>
Merge branch '3187_iso9660_rr_joliet'

* 3187_iso9660_rr_joliet:
  Ticket #3187: use Joliet and RockRidge in ISO9660 image view action.