Merge branch 'schema_upgrades' into release-0.9

Aleksander Machniak

2013-01-17 f5c7df4c324d3157ab47469f492ecdb2a4b82e93

 program/lib/Roundcube/rcube_db.php

@@ -402,6 +402,7 @@

        // destroy reference to previous result, required for SQLite driver (#1488874)
        $this->last_result = null;
        $this->db_error_msg = null;

        // send query
        $query = $this->dbh->query($query);