Add the remaining AcceptX commands (AcceptParamChange,
AcceptNetBindChange, AcceptHardwareProfileChange, AcceptPowerEvent, and
AcceptSessionChange) to the windows/svc package. Also add support for
these to updateStatus such that a service can actually accept these
commands.

Change-Id: I11191e7798489b3222a3e76ba55129f10fd202ab
Reviewed-on: https://go-review.googlesource.com/46722Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>