need dovecot & dovecot_dev installed on unstable10s/x

[Jake Goerzen via buildfarm]

Hello,

   Please install "dovecot" and "dovecot_dev" packages on 
unstable10s/x.  I have a request to build the pigeonhole sieve plugin 
for dovecot.  The daemon can be disabled, so after installing you can 
"svcadm disable cswdovecot".

Thanks,
Jake