Issue 138 - Changes to add in 'element'

["Yaron Y. Goland" <ygoland@bea.com>]

Section 8.2:

From:
<wsdl:definitions name="ncname">
	<bpws:property name="ncname" type="qname"/>
		...
</wsdl:definitions>

To:
<wsdl:definitions name="ncname">
	<bpws:property name="ncname" type="qname"? element="qname"?/>
		...
</wsdl:definitions>
Either the type or element attributes MUST be present but not both.

From:
The notion of aliasing is introduced to map a global property to a field 
in a specific message part.

To:
The notion of aliasing is introduced to map a global property to a field 
in a specific message part or a value in a XML variable.

From:
The property name becomes an alias for the message part and location,...

To:
The property name becomes an alias for the message part and location or 
XML variable value, ...