http://dovecot.org/test/

Fixes the extra data appearing in POP3 mails (and possibly some other random problems).

Created lib-sql API with asynchronous PostgreSQL and synchronous MySQL implementations. Also means I dropped mysql and pgsql userdb and passdb and replaced them with one generic sql userdb and passdb. If you were using the old ones, you'll have to fix your configuration. See included doc/dovecot-sql.conf for more information. Note that the password_query must now return "password" named column, before it was assumed that the first returned column was password.