[PATCH final] POSIX Asynchronous I/O support

[Mark Geisert]

Last night I wrote:
[...]
>The implementation has been tested
> with a couple different spot-check programs, as well as with iozone for
> stress testing.  It's time to open it up for wider usage.

It just occurred to me that I could provide my test programs as source or exes 
if that would be helpful.  Source could go to cygwin-developers and/or I could 
host both source and exes on my GitHub space.  Let me know.

..mark