build: set debian version with trailing '-1'
build: add debian packaging files

most of these are the basics from http://wiki.debian.org/IntroDebianPackaging
build: deb: run dch in the build/ checkout, not repo
build: deb: create .orig.tar.bz2
build: ensure binary has correct name when building deb
build: install: ensure destination dirs exist
build: add postinst to ensure setuid root