uv: upgrade to 9c76d0d

deps/uv/src/unix/udp.c

@@ -340,6 +340,14 @@ static int uv__bind(uv_udp_t* handle,
     goto out;
   }
 
+#ifdef SO_REUSEPORT /* Apple's version of SO_REUSEADDR... */
+  yes = 1;
+  if (setsockopt(fd, SOL_SOCKET, SO_REUSEPORT, &yes, sizeof yes) == -1) {
+    uv__set_sys_error(handle->loop, errno);
+    goto out;
+  }
+#endif
+
   if (flags & UV_UDP_IPV6ONLY) {
 #ifdef IPV6_V6ONLY
     yes = 1;