winealsa: Log the periodic renderer callback.

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

Hi,

Andrew seems to have an internal "tick" patch.
You may argue that it's better to have a silent callback (because of kernel race conditions
randomly overwriting logs, bug #19125), but that doesn't help us.
DSound's callback is extremely verbose.
I'm angry because waveOutWrite doesn't even log how much it got.

By contrast, I made GetCurrentPadding less verbose and not interfere with
ALSA because I already have in mind a lock-less winealsa and wineoss callback design
(not for 1.4, I'm sorry, although it's straightforward. We'll have to live with EnterCS in 1.4).

Regards,
 Jörg Höhle
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