If inotify instance limit is reached, give a hint about max_user_instances file that can be increased.
If inotify instance limit is reached, give a hint about max_user_instances
file that can be increased.

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branch : HEAD

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