Update SELECT version() to show whether it is a 32 or 64-bit backend binary.

configure.in

 dnl Process this file with autoconf to produce a configure script.
-dnl $PostgreSQL: pgsql/configure.in,v 1.579 2009/01/05 10:25:59 petere Exp $
+dnl $PostgreSQL: pgsql/configure.in,v 1.580 2009/01/06 03:05:23 momjian Exp $
 dnl
 dnl Developers, please strive to achieve this order:
 dnl
@@ -496,8 +496,10 @@ if test x"$GCC" = x"yes" ; then
 else
   cc_string=$CC
 fi
+AC_CHECK_SIZEOF([void *])
+
 AC_DEFINE_UNQUOTED(PG_VERSION_STR,
-                   ["PostgreSQL $PACKAGE_VERSION on $host, compiled by $cc_string"],
+                   ["PostgreSQL $PACKAGE_VERSION on $host, compiled by $cc_string, `expr $ac_cv_sizeof_void_p \* 8`-bit"],
                    [A string containing the version number, platform, and C compiler])
 
 

doc/src/sgml/start.sgml

-<!-- $PostgreSQL: pgsql/doc/src/sgml/start.sgml,v 1.47 2008/05/16 17:17:00 momjian Exp $ -->
+<!-- $PostgreSQL: pgsql/doc/src/sgml/start.sgml,v 1.48 2009/01/06 03:05:23 momjian Exp $ -->
 
  <chapter id="tutorial-start">
   <title>Getting Started</title>
@@ -362,9 +362,9 @@ mydb=#
     <indexterm><primary>version</primary></indexterm>
 <screen>
 <prompt>mydb=&gt;</prompt> <userinput>SELECT version();</userinput>
-                            version
-----------------------------------------------------------------
- PostgreSQL &version; on i586-pc-linux-gnu, compiled by GCC 2.96
+                               version
+ -----------------------------------------------------------------------
+ PostgreSQL &version; on i586-pc-linux-gnu, compiled by GCC 2.96, 32-bit
 (1 row)
 
 <prompt>mydb=&gt;</prompt> <userinput>SELECT current_date;</userinput>