[Dovecot] new configure-option --disable-index

[Tomi Hakala]

Marten Lehmann wrote:
> I would be much obliged if you could create an option called 
> "--disable-index" in the configure-script or something like 
> "disable-index = yes" in dovecot.conf that makes dovecot ignoring 
> existing index files and doesn't care for related operations, so NFS 
> should work much faster and IMAP search would simply parse the files 
> directly instead of looking in the index.

Either store indexes on a local disk or use nonpersistent memory
indexes:

default_mail_env = maildir:/nfs/%d/%u/Maildir:INDEX=MEMORY

Tomi