[PATCH 21/25] mciseq: Remain responsive while processing large delays.

[Joerg-Cyril.Hoehle at t-systems.com]

Hi,

some MIDI initialisation files contain huge delays
(I can't remember whether KDE's silence.mid is one such file).
While sleeping and unlike native, the Wine driver was completely
unresponsive to Pause/Stop/Close.

We could have waited for an event in such a case, however
- the currently used Sleep has little overhead while
- WaitForSingleObject(hEvent, time) goes through the server,
  so I don't like it much as a time base
and I observed that w9x continues to update Status Position
(unlike w7), so I implemented somewhat compatible behaviour,
ticking once per second.

static	DWORD	MIDI_ConvertPulseToMS(WINE_MCIMIDI* wmm, DWORD pulse)
-    if (wmm->nDivision == 0) {
Since computing maxDelta corresponds to the inverse of PulseToMS,
I checked that function.  As mentioned about patch 15/25, this check has
become superfluous: you cannot call Status anymore without a valid MIDI file.

Regards,
	Jörg Höhle
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