in check constraints (Tom)
     </P
></LI
><LI
><P
>      Avoid unnecessary locking of small tables in <TT
CLASS="COMMAND"
>VACUUM</TT
>
      (Heikki)
     </P
></LI
><LI
><P
>      Fix a problem that sometimes kept <TT
CLASS="COMMAND"
>ALTER TABLE ENABLE/DISABLE
      RULE</TT
> from being recognized by active sessions (Tom)
     </P
></LI
><LI
><P
>      Fix a problem that made <TT
CLASS="LITERAL"
>UPDATE RETURNING tableoid</TT
>
      return zero instead of the correct OID (Tom)
     </P
></LI
><LI
><P
