[wsrp] [errata #21] Require namespacePrefix?

[Rich Thompson <richt2@us.ibm.com>]

Comment: 
#21. 5/20/03 (Alejandro
Abdelnur) 
The namespacePrefix should be required as it may
be used by the portlet to namespace things (ie: javascript thingies) within
the generated content. This is independent from templating.

Document: Spec 
Section:  6.1.2
Old Text: [O]
       string          
      namespacePrefix
New Text: [R]
       string          
      namespacePrefix


Document: WSDL
Section:  wsrp_v1_types.xsd
Old Text: <element
name="namespacePrefix"    type="xsd:string"
     minOccurs="0"/>
New Text: <element
name="namespacePrefix"    type="xsd:string"/>