Work around a documentation toolchain problem by replacing the "AIX-fixlevels"

table with a <variablelist> carrying the same information.  Previously the
9.0 documentation was failing to build as a US-size PDF file.  It's quite
obscure what the real problem is or why this avoids it, but we need a hack
now so we can build docs for beta4.

In passing do a bit of editing in the AIX installation docs, in particular
remove a long-obsolete claim that the regression tests are likely to fail.

doc/src/sgml/installation.sgml

-<!-- $PostgreSQL: pgsql/doc/src/sgml/installation.sgml,v 1.349 2010/07/27 19:01:16 petere Exp $ -->
+<!-- $PostgreSQL: pgsql/doc/src/sgml/installation.sgml,v 1.350 2010/07/29 18:29:52 tgl Exp $ -->
 
 <chapter id="installation">
  <title><![%standalone-include[<productname>PostgreSQL</>]]>
@@ -2126,77 +2126,49 @@ kill `cat /usr/local/pgsql/data/postmaster.pid`
    </para>
 
    <para>
-    Use the following <command>configure</command> flags in addition
-    to your own if you have installed Readline or libz
-    there: <literal>--with-includes=/usr/local/include
-    --with-libraries=/usr/local/lib</literal>.
+    The minimum recommended fix levels for supported AIX versions are:
    </para>
 
-   <para>
-    If you don't have a PowerPC or use GCC you might see rounding
-    differences in the geometry regression test.  There will probably
-    be warnings about 0.0/0.0 division and duplicate symbols which you
-    can safely ignore.
-   </para>
+   <variablelist>
+    <varlistentry>
+     <term>AIX 4.3.3</term>
+     <listitem><para>Maintenance Level 11 + post ML11 bundle</para></listitem>
+    </varlistentry>
 
-   <para>
-    Some of the AIX tools may be <quote>a little different</quote>
-    from what you may be accustomed to on other platforms.  If you are
-    looking for a version of <command>ldd</command>, useful for
-    determining what object code depends on what libraries, the
-    following URLs may help you:
-    <ulink url="http://www.faqs.org/faqs/aix-faq/part4/section-22.html"></ulink>,
-    <ulink url="http://www.han.de/~jum/aix/ldd.c"></ulink>.
-   </para>
+    <varlistentry>
+     <term>AIX 5.1</term>
+     <listitem><para>Maintenance Level 9 + post ML9 bundle</para></listitem>
+    </varlistentry>
+
+    <varlistentry>
+     <term>AIX 5.2</term>
+     <listitem><para>Technology Level 10 Service Pack 3</para></listitem>
+    </varlistentry>
+
+    <varlistentry>
+     <term>AIX 5.3</term>
+     <listitem><para>Technology Level 7</para></listitem>
+    </varlistentry>
+
+    <varlistentry>
+     <term>AIX 6.1</term>
+     <listitem><para>Base Level</para></listitem>
+    </varlistentry>
+   </variablelist>
 
    <para>
-    <xref linkend="AIX-fixlevels"> shows the minimum recommended fix levels
-    for various AIX versions.  To check your current fix level, use
+    To check your current fix level, use
     <command>oslevel -r</command> in AIX 4.3.3 to AIX 5.2 ML 7, or
     <command>oslevel -s</command> in later versions.
    </para>
 
-   <table id="AIX-fixlevels">
-    <title>
-     Minimum recommended <systemitem class="osname">AIX</systemitem> fix levels
-    </title>
-
-    <tgroup cols="2">
-     <thead>
-      <row>
-       <entry>AIX version</entry>
-       <entry>fix level</entry>
-      </row>
-     </thead>
-
-     <tbody>
-      <row>
-       <entry>AIX 4.3.3</entry>
-       <entry>Maintenance Level 11 + post ML11 bundle</entry>
-      </row>
-
-      <row>
-       <entry>AIX 5.1</entry>
-       <entry>Maintenance Level 9 + post ML9 bundle</entry>
-      </row>
-
-      <row>
-       <entry>AIX 5.2</entry>
-       <entry>Technology Level 10 Service Pack 3</entry>
-      </row>
-
-      <row>
-       <entry>AIX 5.3</entry>
-       <entry>Technology Level 7</entry>
-      </row>
-
-      <row>
-       <entry>AIX 6.1</entry>
-       <entry>Base Level</entry>
-      </row>
-     </tbody>
-    </tgroup>
-   </table>
+   <para>
+    Use the following <command>configure</command> flags in addition
+    to your own if you have installed Readline or libz in
+    <literal>/usr/local</>:
+    <literal>--with-includes=/usr/local/include
+    --with-libraries=/usr/local/lib</literal>.
+   </para>
 
    <sect3>
     <title>GCC issues</title>
@@ -2250,8 +2222,8 @@ kill `cat /usr/local/pgsql/data/postmaster.pid`
      to parse IP addresses in <varname>listen_addresses</>,
      <filename>pg_hba.conf</>, etc.  Older versions of AIX have assorted
      bugs in this function.  If you have problems related to these settings,
-     updating to the appropriate fix level shown in <xref
-     linkend="AIX-fixlevels"> should take care of it.
+     updating to the appropriate AIX fix level shown above
+     should take care of it.
     </para>
 
     <!-- http://archives.postgresql.org/message-id/6064jt6cfm.fsf_-_@dba2.int.libertyrms.com -->
@@ -2301,13 +2273,15 @@ hosts=local4,bind4
      </itemizedlist>
     </para>
 
-    <warning> <para> This is really a workaround of problems relating
+    <warning>
+    <para>
+     This is really a workaround for problems relating
      to immaturity of IPv6 support, which improved visibly during the
      course of AIX 5.3 releases.  It has worked with AIX version 5.3,
      but does not represent an elegant solution to the problem.  It has
      been reported that this workaround is not only unnecessary, but
-    causes problems on AIX 6.1, where IPv6 support has become more
-    mature. </para>
+     causes problems on AIX 6.1, where IPv6 support has become more mature.
+    </para>
     </warning>
 
    </sect3>