[+] IOPipeRequest::uMinBytesToRead
[+] (secret api intended for unix users) AuIO::NewLSOSHandleEx
[*] Fix quirks when running Gtk under an io processor
...CtxYield shouldn't spin while work (improper breakout on remote update)
[*] EFileOpenMode::eWrite should assume O_CREAT semantics making eReadWrite somewhat redundant. OpenWrite + eWrite should reasonably work with file-appends. it should not mean force create + cucked GetLength().