uri - uri: added uri_table -> uri cast

Log Message:
-----------
added uri_table -> uri cast

Modified Files:
--------------
uri:
uri.c (r1.5 -> r1.6)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/uri/uri/uri.c.diff?r1=1.5&r2=1.6)
uri.sql (r1.3 -> r1.4)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/uri/uri/uri.sql.diff?r1=1.3&r2=1.4)