doc: update my copyright year
doc: only copyright of last year is updated

app: dpkg-copyright

var: my @l = localtime; $var{year} =  $l[5]+1900; $var{oldyear} = $var{year} - 1

# $oldyear and $year can be overridden by command arguments
load: Files:~ Copyright=~"s/$oldyear,?\s+$DEBFULLNAME/$year, $DEBFULLNAME/g"

commit: updated copyright year of $DEBFULLNAME
