iocpreator can drop a listening socket by mistake

[ghazel]

in iocpreactor\ops.py the ERROR_NETNAME_DELETED error is handled, but 
ERROR_SEM_TIMEOUT (=121) is not. Meaning if a timeout occurs, 
self.transport.acceptErr is called, dropping the listening port altogether.
I believe they should be handled exactly the same way (it works here).

There's no demo for this problem, because there's no sure-fire way to reproduce 
it (not all drivers use ERROR_SEM_TIMEOUT, and mine only does it under heavy 
load).

[justinj]

I'm reassigning this to me.  Let me know if you have a problem with that.

[justinj]

Fixed in r15084.