Move backend_pid to functions/misc.

doc/src/sgml/func.sgml

 <!--
-$Header: /cvsroot/pgsql/doc/src/sgml/func.sgml,v 1.104 2002/06/24 22:17:01 tgl Exp $
+$Header: /cvsroot/pgsql/doc/src/sgml/func.sgml,v 1.105 2002/07/31 02:27:28 momjian Exp $
 PostgreSQL documentation
 -->
 
@@ -4353,6 +4353,11 @@ SELECT NULLIF(value, '(none)') ...
        <entry><type>name[]</type></entry>
        <entry>names of schemas in search path optionally including implicit schemas</entry>
       </row>
+     <row>
+      <entry><function>backend_pid</function>()</entry>
+      <entry><type>integer</type></entry>
+      <entry>process ID of the session backend</entry>
+     </row>
      </tbody>
     </tgroup>
    </table>

doc/src/sgml/monitoring.sgml

 <!--
-$Header: /cvsroot/pgsql/doc/src/sgml/monitoring.sgml,v 1.8 2002/07/31 01:49:12 momjian Exp $
+$Header: /cvsroot/pgsql/doc/src/sgml/monitoring.sgml,v 1.9 2002/07/31 02:27:29 momjian Exp $
 -->
 
 <chapter id="monitoring">
@@ -480,14 +480,6 @@ postgres: <replaceable>user</> <replaceable>database</> <replaceable>host</> <re
       </entry>
      </row>
 
-     <row>
-      <entry><function>backend_pid</function>()</entry>
-      <entry><type>integer</type></entry>
-      <entry>
-       Process ID of current backend
-      </entry>
-     </row>
-
      <row>
       <entry><function>pg_stat_get_backend_pid</function>(<type>integer</type>)</entry>
       <entry><type>integer</type></entry>