ole32: Fix HGLOBALStreamImpl_CopyTo to check the return values of IStream_Read and IStream_Write and to not compare the bytes read to the bytes written.

Add tests for IStream::CopyTo of the HGLOBAL stream implementation.

Change some incorrect usages of SEEK_SET to the intended STREAM_SEEK_SET 
instead.

ole32: Move the Running Object Table test in marshal.c to moniker.c to put it with the other ROT tests.