Log Message:
Update security/caff to 0.4.9

Changelog:
 * caff:
   + Fix a bug with checking if we have exactly one or more keys that failed
     downloading.
   + Mention in manpage that keyserver-options is a useful setting in
     .caff/gnupghome/gpg.conf (Closes: #392811).
   + q-p-encode From: header (Closes: #366745).