Base64-encoded element are not decoded

[jhenot]

According to the Amazon SimpleDB Developer Guide : "To ensure that you can read all the data you sent via REST, if a response contains invalid XML characters, Amazon SimpleDB automatically Base64-encodes the UTF-8 octets of the text. When a returned element is Base64-encoded, its encoding element is set to base64. The following example shows Base64-encoded results from a GetAttributes operation."

Base64-encoded are not decoded in _parse_attributes method.

[jhenot]

So for fixing, in _parse_attributes of simpledb.py, I replace

value = attribute.find('{%s}Value' % self.ns).text

By

attValue = attribute.find('{%s}Value' % self.ns)
value = attValue.text
if len(attValue.attrib.keys()) != 0:
    if attValue.attrib.has_key('encoding'):
        value = value.decode(attValue.attrib.get("encoding"))