hhctrl.ocx: Update HtmlHelp and its commands definitions, and partially implement data A->W translation.

The TEXT_TabbedTextOut didn't set correctly the text starting point
(x0) for left-aligned tabs and was ignoring the last tab. I've also
changed GetTextMetricsA to W as this should be slightly faster.

The previous mixer code depended on the existence of 1 'Master', and 1
'Capture' control. According to some feedback in wine-devel this is not
always the case, the new code will try the following order for loading:
Destination waveout: Master, Headphone PCM
Destination wavein: Capture

ole32: Remove an unnecessary QueryInterface in CoRegisterClassObject that CoMarshalInterface will already do.

setupapi: SetupCopyOEMInfW should preserve the basename when copying the inf file to the inf directory if possible.

If the file already exists, then it should use a name with the form oem%u.inf instead.

riched20: Add the tests for EM_SETTEXTEX/EM_GETTEXTEX in addition to WM_SETTEXT/WM_GETTEXT, make them pass under Wine.

WidenPath now recognizes PS_JOINs and PS_ENCDAPs.