This is required so that MountMgr can handle devices that are still
using class2 instead of classpnp.
Given we have no unique ID to return, we'll return device path, which
is far from perfect but which is enough for now to have everything
working.
There is no need to compile our DLLs as shared libraries since we are
managing symbols exports and imports through spec files.
On my system, this reduces the configure-time by a factor of two.
