 was bad for
      applications that rely on <CODE
CLASS="FUNCTION"
>txid_current()</CODE
> and related
      functions: the TXID value would appear to go backwards.
     </P
></LI
><LI
><P
>      Fix <CODE
CLASS="FUNCTION"
>pg_terminate_backend()</CODE
> and
      <CODE
CLASS="FUNCTION"
>pg_cancel_backend()</CODE
> to not throw error for a non-existent
      target process (Josh Kupershmidt)
     </P
><P
>      This case already worked as intended when called by a superuser,
      but not so much when call