libtxc_dxtn newer version available

Hi DM,

I just wanted to point out there's been for sometime now, a newer
version of the libtxc-dxtn library
(http://cgit.freedesktop.org/~mareko/libtxc_dxtn/) available.

This library enables s3tc compression with Mesa. Version is now 1.0.0
and it brings several bug fixes.

It would be great to see it in Debian Multimedia

Thanks for your work

Andres