"Disk ejected not properly" upon sleep

[syscl]

Feel free to close this at anytime, just post here if you have the same issue.

On M3800 I suffer from the issue that disk ejected improperly after resume from sleep. It also can happen on a real MacBook. This issue has a very long history since the coming of Mavericks.

Here's my solution of this issue, using sleepwatcher to eject disk before sleep.

See https://github.com/syscl/Fix-usb-sleep and syscl/M3800@275a658