proposal: minor syntax improvement for soap fault bindings

I suggest we move wsoap:code/wsoap:value to an attribute:

That is, instead of:

      <wsoap:code>
        <wsoap:value>xs:QName</wsoap:value>
        <wsoap:subcode>
          <wsoap:value>xs:QName</wsoap:value>
          <wsoap:subcode>...</wsoap:subcode>
        </wsoap:subcode>?
      </wsoap:code>

we do:

      <wsoap:code value="xs:QName">
        <wsoap:subcode value="xs:QName">
          <wsoap:subcode>...</wsoap:subcode>
        </wsoap:subcode>?
      </wsoap:code>

This makes the syntax more consistent with the rest of the
SOAP binding which is rather attribute-heavy.

Sanjiva.