We don't actually care what period size gets used (in fact, docs say the
parameter is entirely ignored in Shared mode).

winmm: Give a name to the critical sections, make them static and delete them when unloading the dll.

wineoss.drv: Give a name to the mmdevapi critical sections, make them static and delete them when unloading the dll.

dsound: Give a name to the critical sections, make them static and delete them when unloading the dll.