Namespace.hs: added a toPMList function for viewing prefix mappings as a list of key-value pairs.
Namespace.hs: added a toPMList function for viewing prefix mappings as a list of key-value pairs.

darcs-hash:20071120223854-db1bb-0eeaffc5c22b59318c7f67f164a155b2dc2d099a

cordawyn/rdf4h,LeifW/rdf4h,ddssff/rdf4h,jutaro/rdf4h