uidlist renumbering: changed iteration code to iterate children first. This will be needed for handling expunges.
uidlist renumbering: changed iteration code to iterate children first. This
will be needed for handling expunges.

--HG--
branch : HEAD

jwm/dovecot-notmuch,jwm/dovecot-notmuch,jkerihuel/dovecot,jwm/dovecot-notmuch,jkerihuel/dovecot,jwm/dovecot-notmuch,jkerihuel/dovecot,jwm/dovecot-notmuch,jkerihuel/dovecot,jkerihuel/dovecot