Test cases for proposal: unrecognized attributes in the xml namespace should be ignored.

This closes ACTION 2002-01-18#2

The first test case covers the xml: namespace with examples of
xml:space and xml:foo generating no extra ntriples.

The second case uses an attribute that XML reserves - xmlnewthing and
shows it generates no extra ntriples.  Not sure if this one should be
there; let me know.

Dave

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<http://example.org/thing> <http://example.org/schema#prop1> "blah" .
<http://example.org/thing> <http://example.org/schema#prop2> "more" .

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# Technology, Institut National de Recherche en Informatique et en
# Automatique, Keio University).
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# All Rights Reserved.
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# Please see the full Copyright clause at
# <http://www.w3.org/Consortium/Legal/copyright-software.html>
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# $Id:$
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<http://example.org/thing> <http://example.org/schema#prop1> "stuff" .