patch for EXECUTE .. INTO (from TODO)

Hello

I did small trivial patch (almost all was written) for storing
result from executing dynamic query into ROW or RECORD variable.

CREATE TABLE fxx(i integer, y integer);
CREATE TYPE fxt AS (i integer, z integer);

CREATE OR REPLACE FUNCTION foo(varchar) RETURNS RECORD AS $$
DECLARE _r RECORD; _f fxx%ROWTYPE; _t fxt; z fxx;
BEGIN
DELETE FROM fxx;
EXECUTE 'INSERT INTO fxx VALUES(10,15)';
EXECUTE 'SELECT (row).* from (select row(10,1)::fxx)s' INTO _r;
RAISE NOTICE '%', _r.i;
EXECUTE 'SELECT * FROM '||$1||' LIMIT 1' INTO _f;
RETURN _f;
END; $$ LANGUAGE plpgsql;
SELECT foo('fxx');

pokus=# NOTICE: 10
foo
---------
(10,15)
(1 row)

Best regards
Pavel Stehule