winealsa: Have the MIDI recorder wait in poll(), not snd_seq_event_input().

Johannes Kroll wrote:
> It is in the log line that you deleted.
> Oops.
> No, I don't have wineOSS. Does it require a proper OSSv4?
> Currently, yes. You'd have to try out wine-1.3.24 or older.

I'll try and see how to use virtual MIDI devices to dump data
without using a serial port.

Anyway, I'll start writing a patch that decomposes LongMsg
into snippets, although I don't know how to handle the three
00 00 00 bytes.

Regards,
 Jörg Höhle