The tests (shellpath.c/testPersonal) already show that it can be either 
PT_FOLDER or PT_GUID. It's PT_GUID on WinXP.

Handle failure of CreateConnectionPoint on construction.

We can't use GetModuleFileName on a resource-only module, so the best
we can do is to copy the original name we used to find the type
library.  Fix a couple of places where we were incorrectly using the
file name, rather than the path.

Free the connection points on destruction of the font object and cope
with failure of CreateConnectionPoint on construction.

marshaler.

One or more invoke flags can be passed into IDispatch::Invoke, but we
only care if INVOKEFLAG_PROPERTYGET is specified, and don't about any
others.

dropped in queue_hardware_message. This should fix some problems with
the Alt key getting "stuck" after Alt-Tab.

the audio tab.

- Change select timeout from 2 seconds to 500 microseconds.
- Add test to make sure select wakes up after a closesocket.
- Add test to make sure listen fails without bind.