Log Message:
libuv: updated to 1.26.0

Changes 1.26.0:
* doc: fix uv_get_free_memory doc
* unix: fix epoll cpu 100% issue
* openbsd,tcp: special handling of EINVAL on connect
* win: simplify registry closing in uv_cpu_info()
* src,include: define UV_MAXHOSTNAMESIZE
* win: return product name in uv_os_uname() version
* thread: allow specifying stack size for new thread
* win: fix duplicate tty vt100 fn key
* unix: don't attempt to invalidate invalid fd