getdns: fix optional dependencies.
getdns: update 0.1.1 bottle.

Closes #28037.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>
stanford-parser 3.3.1

Closes #28087.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>
meld 1.8.4
Add formula for irssi-otr plugin.
Update irssi-otr caveats
irssi-otr: add 0.3 bottle.