7490 international:
 * add support for [http://www.belgacom.be/ Belgacom] [ftp://ftp.avm.de/fritz.box/fritzbox.7490/firmware/belgium/info.txt certified] version of international firmware
 * compile-tested only
 * follow-up of r12146 & r12183


git-svn-id: file:///var/svn/freetz/trunk@12193 149334a1-2f27-0410-a3b9-fc62619ac1e6