readAttributes() works on DOMAttr representations.

For example, when we select only attributes with a XPath expression, it
is equivalent to get a collection of “DOMAttr objects”. In this case,
readAttributes() failed to read attributes because the data are not
present at the same level. This is fixed now :-).
[auto] Merge from Xml

    • #0ec3dbc — readAttributes() works on DOMAttr representations. (Ivan Enderlin, 2013-02-18)

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Merge remote branch 'library-xml/master'