Wrote a GUI import dialog.
With help from Aric Stewart.

Autoprobing via DG_CONTROL/DAT_IDENTITY/MSG_GET.

ole32: The type check in AntiMonikerImpl_CommonPrefixWith should be for anti-monikers, not item-monikers.

check for the composite moniker having only one moniker in it. In this
case, return the one moniker and free the memory associate with the
composite moniker.

ole32: Fix infinite recursion in CompositeMonikerImpl_GetTimeOfLastChange by handling pmkToLeft properly.

Fix a typo where CompositeMonikerImpl_GetTimeOfLastChange was called 
instead of the virtual implementation of it on mostRightMk.

ole32: Make the size returned by CompositeMonikerImpl_GetMarshalSizeMax match that returned by native.

Don't leak memory in the case of newCompositeMoniker->tabLastIndex == 1, 
which can't happen anyway.
Allow construction of a moniker with no sub-monikers.