dovecot updated to 2.2.26.0, pigeonhole updated to 0.4.16

- master process's listener socket was leaked to all child processes.
  This might have allowed untrusted processes to capture and prevent
  "doveadm service stop" comands from working.
- login proxy: Fixed crash when outgoing SSL connections were hanging.
- auth: userdb fields weren't passed to auth-workers, so %{userdb:*}
  from previous userdbs didn't work there.
- auth: Fixed auth_bind=yes + sasl_bind=yes to work together
- lmtp: %{userdb:*} variables didn't work in mail_log_prefix
- Fixed writing >2GB to iostream-temp files (used by fs-compress,
  fs-metawrap, doveadm-http)
- fts-solr: Fixed searching multiple mailboxes
- and more...

.gitignore

@@ -103,3 +103,5 @@ pigeonhole-snap0592366457df.tar.bz2
 /dovecot-2.2.24.tar.gz
 /dovecot-2.2-pigeonhole-0.4.14.tar.gz
 /dovecot-2.2.25.tar.gz
+/dovecot-2.2.26.0.tar.gz
+/dovecot-2.2-pigeonhole-0.4.16.tar.gz