The methods which were overloaded with shaded/unshaded protobuf paramters
now have @Private ones with different names. the existing overloaded
methods are still there but deprecated, in case things use them.
* removed the extra imports needed before this change went in
* protobuf2.scope is the name for the scope var
+added a test for exception extraction, so yetus stops complaining
I am thinking of merging this in to 3.3.5 with the scope set to "compile",
as we get today. That way
* the overloading changes are in
* anyone who wants to cut their own release without protobuf2.5 can do it
Change-Id: I3423720c7047c63f7c9797d6e386774bff10b21a