With this, dbaccess can not only load .odb files, but also other ODF
packages as well, as long as the URL's mark (the part after the "#")
contains under what namespace the real .odb is.

This will be used for embedding data source definitions into .odt
documents by Writer in a bit.

Change-Id: Ic1e922418c185fd6ec49d442a3419b80c9a6c76a