Bug#646320: Update debian/watch file to support tar.xz extensions

[mdt at cryptolab.net]

Package: system-config-printer
Version: 1.2.3-3
Severity: important
Tags: squeeze

The new version of system-config-printer are in tar.xz extensions. Update the watch file to support it.

http://cyberelk.net/tim/data/system-config-printer/1.3/

-- System Information:
Debian Release: wheezy/sid
  APT prefers stable-updates
  APT policy: (500, 'stable-updates'), (500, 'stable')
Architecture: amd64 (x86_64)

Kernel: Linux 3.0.0-1-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages system-config-printer depends on:
ii  gnome-icon-theme   2.30.3-2              GNOME Desktop icon theme
ii  python             2.6.6-3+squeeze6      interactive high-level object-orie
ii  python-cups        1.9.48-1+b1           Python bindings for CUPS
ii  python-cupshelpers 1.2.3-3               Python utility modules around the 
ii  python-dbus        0.83.1-1              simple interprocess messaging syst
ii  python-glade2      2.17.0-4              GTK+ bindings: Glade support
ii  python-gnome2      2.28.1-1              Python bindings for the GNOME desk
ii  python-gtk2        2.17.0-4              Python bindings for the GTK+ widge
ii  python-libxml2     2.7.8.dfsg-2+squeeze1 Python bindings for the GNOME XML 
ii  python-notify      0.1.1-2+b2            Python bindings for libnotify
ii  python-support     1.0.14                automated rebuilding support for P

Versions of packages system-config-printer recommends:
ii  cups-pk-helper                0.1.2-1    PolicyKit helper to configure cups
ii  system-config-printer-udev    1.2.3-3    Utilities to detect and configure 

Versions of packages system-config-printer suggests:
ii  python-gnomekeyring          2.32.0-1+b1 Python bindings for the GNOME keyr
pn  python-smbc                  <none>      (no description available)
pn  sessioninstaller             <none>      (no description available)

-- no debconf information