StubbedPropertySetup.IsMatch is too picky

Comparing `MethodInfo`s using the `==` operator appears to go wrong more
often than not. (In this case, this method fails to identify a positive
match of `Base.Property` as the implementation for `IBase.Property`).

Let's make this test much more imprecise by simply comparing accessor
method names (and thus completely ignoring the type hierarchy; if we're
lucky, the .NET compilers will already guarantee valid polymorphic type
relationships).

src/Moq/StubbedPropertySetup.cs

@@ -100,8 +100,8 @@ public override int GetHashCode()
 
 			public override bool IsMatch(Invocation invocation)
 			{
-				var method = invocation.Method;
-				return method == this.getter || method == this.setter;
+				var methodName = invocation.Method.Name;
+				return methodName == this.getter.Name || methodName == this.setter.Name;
 			}
 		}
 	}