description of a database object
        (&Aacute;lvaro Herrera)
       </P
></LI
><LI
><P
>        Add post-<TT
CLASS="COMMAND"
>ALTER</TT
>-object server hooks (KaiGai Kohei)
       </P
></LI
><LI
><P
>        Implement a generic binary heap and use it for Merge-Append
        operations (Abhijit Menon-Sen)
       </P
></LI
><LI
><P
>        Provide a tool to help detect timezone abbreviation changes when
        updating the <TT
CLASS="FILENAME"
>src/timezone/data</TT
> files
        (Tom Lane)
       </