geoip: extend docs after discussion with Francesco Castellano

modules/geoip/README

@@ -82,6 +82,14 @@ Chapter 1. Admin Guide
    and its derivatives as libgeoip, and probably by other distributions as
    well.
 
+   Debian Linux squeeze includes already a database as dependency, but as
+   this contain the wrong data, it will not work correctly with the
+   module. More acurate, the module expect the GeoIP City Edition, and
+   will not work with the GeoIP Country Edition. In newer Debian Linux
+   releases the package geoip-database-contrib should contain the
+   necessary database. You can download the Lite edition of the DB from
+   here.
+
    This module exports a new class of pseudo-variables - $gip(pvc=>key) -
    to enable access to the results of a query to the database.
 

modules/geoip/doc/geoip_admin.xml

@@ -28,13 +28,22 @@
 	</para>
 	<para>
 		This database itself can be obtained on a free or commercial basis 
-		<ulink url="http://www.maxmind.com/app/ip-location">here</ulink>.  The 
+		<ulink url="http://www.maxmind.com/app/ip-location">here</ulink>. The 
 		library that interfaces with the Max Mind API, as well as scripts to
 		automate downloading of the on-disk version of the open-source 
 		database is also packaged by the Debian Linux distribution and 
 		its derivatives as <emphasis>libgeoip</emphasis>, and probably by
 		other distributions as well.
 	</para>
+	<para>
+		Debian Linux squeeze includes already a database as dependency, but as
+		this contain the wrong data, it will not work correctly with the module.
+		More acurate, the module expect the <emphasis>GeoIP City Edition</emphasis>,
+		and will not work with the <emphasis>GeoIP Country Edition</emphasis>. In
+		newer Debian Linux releases the package <emphasis>geoip-database-contrib</emphasis>
+		should contain the necessary database. You can download the Lite edition
+		of the DB from <ulink url="http://www.maxmind.com/app/geolitecity">here</ulink>.
+	</para>
 	<para>
 		This module exports a new class of pseudo-variables -
 		$gip(pvc=&gt;key) - to enable access to the results of a query to the