plperl doc update

I have applied the following doc update for plperl, now that perl has an
--enable-shared configure option.

--
  Bruce Momjian                        |  http://candle.pha.pa.us
  pgman@candle.pha.pa.us               |  (610) 359-1001
  +  If your life is a hard drive,     |  13 Roberts Road
  +  Christ can be your backup.        |  Newtown Square, Pennsylvania 19073
Index: installation.sgml
===================================================================
RCS file: /cvsroot/pgsql-server/doc/src/sgml/installation.sgml,v
retrieving revision 1.194
retrieving revision 1.195
diff -c -c -r1.194 -r1.195
*** installation.sgml    3 Feb 2004 17:34:02 -0000    1.194
--- installation.sgml    26 Feb 2004 02:09:40 -0000    1.195
***************
*** 1,4 ****
! <!-- $PostgreSQL: pgsql-server/doc/src/sgml/installation.sgml,v 1.194 2004/02/03 17:34:02 tgl Exp $ -->

  <chapter id="installation">
   <title><![%standalone-include[<productname>PostgreSQL</>]]>
--- 1,4 ----
! <!-- $PostgreSQL: pgsql-server/doc/src/sgml/installation.sgml,v 1.195 2004/02/26 02:09:40 momjian Exp $ -->

  <chapter id="installation">
   <title><![%standalone-include[<productname>PostgreSQL</>]]>
***************
*** 193,206 ****
       </para>

       <para>
!       The catch is that the Python distribution or the Python
!       maintainers do not provide any direct way to do this.  The
!       closest thing we can offer you is the information in <ulink
!       url="http://www.python.org/doc/FAQ.html#3.30">Python FAQ
!       3.30</ulink>.  On some operating systems you don't really have
!       to build a shared library, but then you will have to convince
!       the <productname>PostgreSQL</> build system of this.  Consult
!       the <filename>Makefile</filename> in the
        <filename>src/pl/plpython</filename> directory for details.
       </para>
      </listitem>
--- 193,203 ----
       </para>

       <para>
!       If you have problems, try running Python's configure using the
!       <literal>--enable-shared</> flag.  On some operating systems you
!       don't really have to build a shared library, but you will have
!       to convince the <productname>PostgreSQL</> build system of this.
!       Consult the <filename>Makefile</filename> in the
        <filename>src/pl/plpython</filename> directory for details.
       </para>
      </listitem>