unknown device issues after running winetest

[Juan Lang]

Hi Paul,

> Are the tests in devinst.c supposed so be run in order? IOW are they
> supposed to bee cleaned up after each subtest or do they rely on each other?

I'm sure I didn't put that much thought into making the tests order
dependent.  I wrote them, ran them, made them into tests, and they
worked at least once for me.  I might not have tested running them
subsequent times on the same machine.

I don't think it's a general problem with the devinst.c tests.  There
are two problems with them:
1. Some of the last error checks fail on some versions of Windows.  I
only have Windows XP, so I couldn't have anticipated these.  James is
doing a nice job of cleaning them up (thanks James.)
2. The call to SetupDiRegisterDeviceInfo leaves keys around that are
hard to delete, and cause subsequent runs of the test to fail.

In my opinion it's probably okay to remove the
SetupDiRegisterDeviceInfo tests.  I don't know any apps that call this
API directly.
--Juan