[kde-doc-english] problem with poxml and kppp

[Gregory Mokhin]

Updating the kppp docs, I get no error from update_xml. However, resulting 
docbook fails validation and doesn't compile. The file is docs/kppp/
global-settings.docbook, where a couple of times there is 

<varlistentry>
<term>bla-bla</term>
<listitem>
<para></para>
</listitem>
</varlistentry>

Note that <para> is empty. update_xml does complain if 
<para></para> 
tags are on one line, but it doesn't complain if
<para>
</para>
are on separate lines.
However, the whole <listentry> tag is taken away from the resulting localized 
docbook, and the document fails to pass the DTD compliance check, so the 
build fails.

Regards - Grisha