Change logs for ubertooth source package in Zesty

ubertooth (2015.09.R2-4) unstable; urgency=medium

  * debian/copyright: Updated copyright year for Debian packaging
  * debian/rules:
    - Use UTC for the timestamp to firmware build as well
    - Use --mode= for tar command to make tarball reproducible

 -- Ruben Undheim <email address hidden>  Tue, 23 Feb 2016 17:41:54 +0100