* makefile.debian: Moved into debian/patches/debian_make.patch.
* debian/compat: Increased compatibility level to 7.
* debian/control (Standards-Version): Bumped to 3.9.3.
  (Build-Depends): Dropped dpatch. Increased required debhelper version.
  (Vcs-Browser): Fixed.
  (Conflicts): Changed into Breaks according to lintian.
* debian/gdis.manpages: Added.
* debian/rules: Rewritten for dh 7.
* debian/source.lintian-overrides: Dropped obsolete file.
* debian/README.source: Dropped obsolete file.
* debian/patches/Debian_make.dpatch: Renamed to
  debian/patches/debian_path.patch.
* debian/patches/debian_make.patch: Added.
  - Moved makefile.debian into this patch.
* debian/patches/00list: Renamed to debian/patches/series and adjusted.
* debian/source/format: Added for quilt-based format 3.0 (closes: #667757).