SoftHub

Fixes:

- mesh - fixed kernel crash;
- ipv4 fasttrack fastpath - accelerates connection tracking and nat for marked connections (more than 5x performance improvement compared to regular slow path conntrack/nat) - currently limited to TCP/UDP only;
- added ~fasttrack-connection~ firewall action in filter/mangle tables for marking connections as fasttrack;
- added fastpath support for bridge interfaces - packets received and transmitted on bridge interface can go fastpath (previously only bridge forwarded packets could go fastpath);
- packets now can go half-fastpath - if input interface supports fastpath and packet gets forwarded in fastpath but output interface does not support fastpath or has interface queue other than only-hw-queue packet gets converted to slow path only at the dst interface transmit time;
- trafflow: add natted addrs/ports to ipv4 flow info;
- queue tree: some queues would stop working after some configuration changes;
- tilegx: enable autoneg for sfp ports in netinstall;
- health - fix voltage on some RB4xx;
- romon - fix 100% CPU usage;
- romon - moved under tools menu in console;
- email - store hostname for consistency;
- vrrp - do not reset interface when no interesting config changes;
- fixed async. ppp server;
- sstp - fixed router lockup.
- queue tree: some queues would stop working after some configuration changes;