In class/System.Web.Services/Test/System.Web.Services.Description:

In class/System.Web.Services/Test/System.Web.Services.Description:

	* ServiceDescriptionTest.cs (ExtensibleAttributes): New test.

In class/System.Web.Services/System.Web.Services.Description:

	* DocumentableItem.cs (ExtensibleAttributes):
	(Extensions): Add missing NET_2_0 properties.
	* Port.cs:
	* OperationBinding.cs:
	* MessagePart.cs
	* Binding.cs:
	* Types.cs:
	* Service.cs:
	* OperationMessage.cs:
	* Message.cs:
	* Import.cs:
	* Operation.cs:
	* PortType.cs: Override and implement Extensions property. Add
	XmlFormatExtensionPoint attribute.

	* MessageBinding.cs: Abstract Extensions property is not present in
	NET_2_0.

	* wsdl.genxs: Update to process unknown attributes as ExtensibleAttributes in NET_2_0.
	* ServiceDescriptionSerializerBase.cs: Regenerated from wsdl.genxs

	* ServiceDescription.cs (ServiceDescription.AddUnknownAttribute): New. Add attribute to
	attributes collection.
	(ServiceDescription.SetExtensibleAttributes): Set DocumentableItem.ExtensibleAttributes
	property.

	* ServiceDescriptionFormatExtensionCollection.cs
	(ServiceDescriptionFormatExtensionCollection.SetParent): Set only if
	value is a ServiceDescriptionFormatExtension type object.

svn path=/trunk/mcs/; revision=59981