write_embedded_types doesn't descend into all types contained by the
array or structure, so create a new function, type_has_pointers, for the
purpose of descending into all types and returning whether or not
pointers are present.

Has the lovely side effect of making Photoshop pressure + tilt work.

The XInput macros such as DeviceMotionNotify will correctly return an eventclass of 0
if the device id is 0.  Given that, we cannot use eventclass != 0 as a meaningful
test, and must instead use the returned type.

wintab32: Compute our physical device characteristics based on the first tablet device that looks like a stylus.

Otherwise, we may be computing based on a mouse or cursor, and then
come to incorrect values for our tilt and pressure settings.

Some microphones don't have a capture control, but a playback control
instead. So use the playback volume, but still register it as capture
volume.

valgrind: Made Wine compliant will latest Valgrind macros (the one removed from 3.3.0 and deprecated since 3.2.0).

These need to include their array part so use var->type instead of 
var->ref->type.