Change logs for grub source package in Zesty

grub (0.97-29ubuntu69) yakkety; urgency=medium

  * Cherry-pick from Debian (Felix Zielcke):
    - Bump to debhelper compat level 5.
    - Fix FTBFS due to texi2html change in default output directory.
  * Disable PIE for stage1 and stage2.

 -- Colin Watson <email address hidden>  Sun, 09 Oct 2016 14:46:28 +0100