contrib: Fix debian install

dirs: no need to specify all dirs (we use a mkdir -p)
links: fix link target

contrib/debian/nagbot.dirs

@@ -1,5 +1,3 @@
-var/lib/nagbot/.irssi/
-var/lib/nagbot/.irssi/scripts
-var/lib/nagbot/.irssi/scripts/autorun
+var/lib/nagbot/.irssi/scripts/autorun/
 etc/nagbot/
 usr/local/bin/

contrib/debian/nagbot.links

@@ -1,4 +1,4 @@
 etc/nagbot/config var/lib/nagbot/.irssi/config
-usr/local/bin/nagios-fifo.pl var/lib/nagbot/.irssi/scripts
-usr/local/bin/tc-14.pl var/lib/nagbot/.irssi/scripts
-usr/local/bin/tweet.pl var/lib/nagbot/.irssi/scripts
+usr/local/bin/nagios-fifo.pl var/lib/nagbot/.irssi/scripts/nagios-fifo.pl
+usr/local/bin/tc-14.pl var/lib/nagbot/.irssi/scripts/tc-14.pl
+usr/local/bin/tweet.pl var/lib/nagbot/.irssi/scripts/tweet.pl