[Dovecot] pop3c_master_user

[Martin Schitter]

the configuration keyword "pop3c_master_user" mentioned in the dsync 
migration documentation (http://wiki2.dovecot.org/Migration/Dsync) does 
not work for dovecot 2.1.7.

a config line like: "pop3c_master_user = cyrus" will produce this error:

doveconf: Fatal: Error in configuration file /etc/dovecot/local.conf 
line 33: Unknown setting: pop3c_master_user

it's not defined in:
src/lib-storage/index/pop3c/pop3c-settings.*

is this feature not enabled with intention?

btw. another question:
will 'doveadm backup' mirror all the IMAP ACL information?

thanks
martin