articles' variable causes a dependency loop

This 'articles' variable contains
'smbdotconf/parameters.all.xml' and causes a
dependency loop when creating parameters.all.xml

Signed-off-by: David Mulder <dmulder@suse.com>
Reviewed-by: Andrew Bartlet <abartlet@samba.org>
Reviewed-by: Noel Power <noel.power@suse.com>
Reviewed-by: Andreas Schneider <asn@samba.org>
