https://msdn.microsoft.com/en-us/library/windows/desktop/ms686244(v=vs.85).aspx

Change-Id: If7d460a9fb43767c0a3ee55e86faf3356162c81d
Reviewed-on: https://go-review.googlesource.com/39609Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>