* Migrated CDBS patch management from simple-patchsys.mk to patchsys-quilt.mk. + Adopted the short README.source from Quilt for Debian Maintainers as-is. + Added a Build-Depends on quilt. * Added to [debian/patches]: 60_Debian_623743.patch "support supplementary groups" (Closes: #623743). * Updated [debian/copyright] to reflect recent upstream contributions. * Implemented automated PPD upgrading for CUPS (>= 1.5.0-3). Backports will simply ignore this script; no Depends version required.