ole32: Expose the marshalled data on the clipboard rather than as a window prop so that other processes can actually read it.

256 is quite ridiculous, considering the dimensions are only UINTs. Perhaps
these arrays should be dynamically allocated in the first place though.

ole32: CoGetTreatAsClass should return S_FALSE if it cannot even find the key for the requested CLSID.

ole32: Rewrite OleQueryCreateFromData so it compares clipboard format ids rather than strings and be sure to free the enumerator.