* debian/patches/26_fix_toolbar.diff: don't set the style for the toolbar,
  allowing gpaint to follow the user's preferences (Closes: #497488)
  (LP: #127296)
* debian/patches/21_fix_crash_on_fill_button_click.dpatch: fixed the check
  for null drawing_area.
* debian/patches/*.dpatch: renamed to *.diff since we're not using dpatch
  anymore
* debian/control: added ${misc:Depends} to the binary package Depends
* debian/patches/*.diff: Added meta information tags compliant with DEP-3
  recommendations.