[redland] Redland Python API

[Dave Beckett]

As I suspected, Python was deleting the objects in the wrong order.
It is tricky to get convince the scripting language interpreters to
delete down the Redland-generated objects before closing down the
Redland library 'world'.   (either that or never close it, leak memory).

So; taking the opportunity to update the Python API with Mark's
fixes, you can get the fixed files at
  http://cvs.ilrt.org/cvsweb/redland/librdf/python/
as RDF.py, example.py and test/test.py - follow the (download) links
or save as from the following links:

  http://cvs.ilrt.org/cvsweb/~checkout~/redland/librdf/python/RDF.py
  http://cvs.ilrt.org/cvsweb/~checkout~/redland/librdf/python/example.py
  http://cvs.ilrt.org/cvsweb/~checkout~/redland/librdf/python/test/test.py

Dave