Cleanup: 1. XdmfArray -- took out getElementSize() 2. XdmfArrayType -- took out IsEqual() 3. Xdmf.i -- implement IsEqual() function here for Python and Java in XdmfArrayType and XdmfItem (see #2 and #5) 4. Xdmf.i -- getNumpyArray uses getElementSize on XdmfArrayType instead of on XdmfArray (see #1) 5. XdmfItem -- took out IsEqual() 6. XdmfWriter -- made setDocumentTitle() and setCersionString() protected functions 7. Java test TestXdmfEquals -- took out test of XdmfItem->IsEqual()