Protect handle issue-ettes

[Conrad Scott]

I wrote:
> I'm still not clear why the cygserver code disturbs this
> mechanism so much: I wasn't getting the seg. fault on
> the HEAD version.  I've now added calls to ProtectHandle
> into the cygserver code, so this doesn't seem to be
> anything to do with their (previous) omission.

Just to clarify, the seg. fault also goes away w/o the debug.cc
patch once I add the ProtectHandle calls to the cygserver code,
but the noise is even worse.

// Conrad