7170058: Confusing error message from javac when overriding a method from a raw supertype
Reviewed-by: mcimadamore

7007615: java_util/generics/phase2/NameClashTest02 fails since jdk7/pit/b123.
Summary: override clash algorithm is not implemented correctly
Reviewed-by: jjg

6476118: compiler bug causes runtime ClassCastException for generics overloading
Summary: compiler allows bridge methods to override unrelated method
Reviewed-by: jjg