Email change: Florian Schlichting -> fsfs@debian.org

also bumping Standards-Version and Debian copyright years along the way
drop version on irssi(-dev) dependency
drop fix-segfault-stroneline.patch, pluck upstreams solution from CVS instead
new patch: fix crash on empty resource, plucked from upstream CVS
new patch from CVS: replace deprecated g_strncasecmp
prepare changelog for release