patch applied (ghc): Remove the Windows Async IO Manager completely in THREADED_RTS mode

[Simon Marlow]

Simon Marlow wrote:
> Fri Dec  1 06:07:53 PST 2006  Simon Marlow <simonmar at microsoft.com>
>   * Remove the Windows Async IO Manager completely in THREADED_RTS mode
>   It isn't used here anyway, just making sure the code doesn't get compiled in.
>   
> 
>     M ./rts/RtsStartup.c -3 +3
>     M ./rts/win32/AsyncIO.c +4
>     M ./rts/win32/IOManager.c +5

Ian - looks like this patch should be merged too, 6.6 threaded RTS is broken on 
Windows without it.

Cheers,
	Simon