tcl extension: UDFs may now 'break' to return an SQL NULL. Add the (eval -asdict) flag to use a dict, instead of an array, for the eval row data. (tags: trunk)

tcl extension: UDFs may now 'break' to return an SQL NULL. Add the (eval -asdict) flag to use a dict, instead of an array, for the eval row data. (tags: trunk)