Go on FreeBSD

Required:

| Kernel version | Min. version | Max. version| |:-------------------|:-----------------|:| | 11-CURRENT | go1.3 w/ issue 7849 (on Google Code) | go1.4 w/ issue 7849 (on Google Code) | | 10-STABLE | go1.3 | go1.4 | | 9-STABLE | go1 | go1.4 | | 8-STABLE | go1 | go1.4 | | 7-STABLE | go1 | go1.1 |