Revert "Modifying #read_service_url to support passing the desired service URL as a request parameter.  If client website Foo uses ActiveResource and wants to proxy for web service Bar, the service URL Foo generates using ActiveResource (say, http://bar.com/entries/42.xml) won't necessarily be the same as the service URL Bar generates using #url_for (say, http://bar.com/entries/show/42.xml).  Because these URLs need to be identical, and because ActiveResource can't know for sure what URL ActionController will generate, it needs to be specified in the request."
Revert "Modifying #read_service_url to support passing the desired service URL as a request parameter.  If client website Foo uses ActiveResource and wants to proxy for web service Bar, the service URL Foo generates using ActiveResource (say, http://bar.com/entries/42.xml) won't necessarily be the same as the service URL Bar generates using #url_for (say, http://bar.com/entries/show/42.xml).  Because these URLs need to be identical, and because ActiveResource can't know for sure what URL ActionController will generate, it needs to be specified in the request."

This reverts commit f13235a624416bcef0d08ff30747efd86f05caa2.

CruGlobal/ccc_rubycas_client,angjunwen/rubycas-client,lsylvester/rubycas-client,angjunwen/rubycas-client,identification-io/rubycas-client,desaperados/rubycas-client,Windermere/rubycas-client,geo767/rubycas-client,rubycas/rubycas-client