Mikrotik 4.4 Released

Noteable from the changelog:

*) snmp - fixed snmp version three;
*) snmp - fixed vlan interface speed;
*) hotspot - fixed radius variables in hotspot html pages;
*) removed support for xen;
*) routing - added support for BFD protocol;
*) fixed problem - MetaROUTER sometimes froze on RB4xx;
*) fixed OSPFv3 on bridge interfaces;