More alignments with Endpoint/EndpointReference

[Raymond Feng]

Hi,

Now we have Endpoint/EndpointReference models to encapsulate the metadata 
for <component, service/reference, binding>.  I think we should better align 
the core-spi to the Endpoint/EndpointReference to further simplify the 
invocation/extension code.

a) Move the methods from RuntimeWire to Endpoint/EndpointReference 
(potentially RuntimeEndpoint/RuntimeEndpointReference)

   1) Endpoint owns the service binding invocation chain (one per Endpoint) 
and the service invocation chains (one per Operation)
   2) EndpointReference owns the reference invocation chains (one per 
Operation) and the reference binding invocation chain (one per 
EndpointReference)
   3) For local wires over a given binding, the EndpointReferenceProvider 
for the binding is responsible for finding the corresponding service 
invocation chain from
       the Endpoint and dispatch the invocations to it. This can be done in 
the BindingInvoker.

b)  Remove methods that looks up by binding from 
RuntimeComponentService/RuntimeComponentReference and push them onto the 
Endpoint/EndpointReference if necessary.

c) Simplify the 
BindingProviderFactory/ServiceBindingProvider/ReferenceBindingProvider SPIs:

   1) Replace the component/service/binding tuple with Endpoint
   2) Replace the component/reference/binding tuple with EndpointReference

Thanks,
Raymond