* debian/control: - Update package descriptions - Drop build-depend on hardening-wrapper - Bump debhelper to 9 - Add Pre-Depends: ${misc:Pre-Depends} to gthumb binary * Convert .install files to multiarch * debian/rules: - Use NEWS as the changelog since it is easier to read - Drop $(shell dpkg-buildflags --export=configure), not needed - Drop --enablle-debug * debian/patches/: - Fully delete 20-backport_comments_loss_fix.patch - Add 25-fix_URL_in_About_and_copyright_year.patch. LP: #1262861 - Drop 01-fix_missing_linkage.patch, not needed