sysinfo

wrapper around the linux syscall sysinfo(2)

useful links in the wild web:

• http://man7.org/linux/man-pages/man2/sysinfo.2.html
• http://man7.org/linux/man-pages/man1/uptime.1.html
• https://github.com/capnm/golang/blob/go1.1.1/src/pkg/syscall/zsyscall_linux_amd64.go#L1050
• https://github.com/capnm/golang/blob/go1.1.1/src/pkg/syscall/ztypes_linux_amd64.go#L528
• https://github.com/capnm/golang/blob/go1.1.1/src/pkg/syscall/ztypes_linux_arm.go#L502