Some more fixes to bugs I noticed today while trying out some new things in production. Note especially the replicator-doveadm socket change, see wiki2.dovecot.org/Replication for how to configure it. This change allowed local replicator to notify the remote replicator about user being synced.
* replicator: Don't create replicator-doveadm socket by default. This way doveadm replicator commands don't accidentally start an unconfigured replicator server. + replicator: Have remote dsync notify the remote replicator that a user was just synced. This way the replicators are kept roughly in sync. + Added ssl_client_ca_file to specify the CA certs as a file. This is needed (instead of ssl_client_ca_dir) in RedHat-based systems. + Added "doveadm fs" commands, mainly to debug lib-fs backends. - Mailbox list indexes weren't using proper file permissions based on the root directory.