[Dovecot] repeat downloads of message headers in 1.0rc19

[Patrick Audley]

> Several people have reported this issue (myself included) to the  
> list in
> the last week.  rc18 does not have this issue; I have fallen back to
> rc18.  This happens for a variety of email clients.  I haven't seen  
> any
> reports of a fix (or better) rc20 to fix this.

Hmm..  I'll retest my rc18 server tomorrow just to check, I might  
have been mistaken.