When Windows resumes after sleep GetQueuedCompletionStatus timeout is
not updated. This commit adds a method for signaling all loops to
wake up and update their timers.
Fixes: https://github.com/nodejs/node/issues/6763
PR-URL: https://github.com/libuv/libuv/pull/962
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Saúl Ibarra Corretgé <saghul@gmail.com>