Please vote: should we fix or drop the usleep() function?

Guys,

Looking in ChangeLog, I see that (a broken) implementation of usleep()
was added to mingwrt in 2008, just about the time that POSIX.1003-1
dropped it, and removed all references to it from the standard.  So...

1) Should we go along with POSIX, and similarly drop it, or...
2) Retain it, but mark it as deprecated?

I'm of two minds, but if we do decide on (2), then we should also fix
the currently broken error return; those earlier versions of POSIX which
did specify it said that it *may* fail if the requested delay is
1,000,000 microseconds or more, it which case it should set errno to
EINVAL, and return -1; our implementation does not set errno, but
returns EINVAL instead of -1.

Furthermore, if we do vote to keep usleep(), it seems kind of anomalous
that we don't also provide an implementation of sleep(), (which remains
a mandatory POSIX function today).

Thoughts?

-- 
Regards,
Keith.

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