Log Message:
-----------
Add defenses against plpython functions being declared to take or return
pseudotypes. Not sure why I neglected to add these checks at the same
time I added them to the other PLs, but it seems I did.
Modified Files:
--------------
pgsql-server/src/pl/plpython:
plpython.c (r1.56 -> r1.57)
(http://developer.postgresql.org/cvsweb.cgi/pgsql-server/src/pl/plpython/plpython.c.diff?r1=1.56&r2=1.57)