Faults: Pass the StaticInst involved, if any, to a Fault's invoke method.



This review is pretty boring except that I moved the "Fault" type definition into base/types.hh to avoid a header file dependency loop, and the idea that a StaticInstPtr parameter is added to the Fault's invoke method per Steve's suggestion on m5-dev. #includes had to be changed around to avoid circular dependencies among headers and to accommodate "Fault"'s new location.