Add new mock.Protected().Setup() method overload

[stakx]

This adds a new method overload for mock.Protected().Setup():

ISetup<TMock> Setup(string voidMethodName, bool exactParameterMatch, params object[] args);

in addition to the existing one:

ISetup<TMock> Setup(string voidMethodName, params object[] args);

This means that with a call such as the following:

mock.Protected().Setup("SomeVoidMethod", true, arg, anotherArg);

true will be interpreted as the exactParameterMatch parameter instead of as the first method argument. This can break existing code, but it can also help new code where the exactParameterMatch is needed to choose the right method to be setup (e.g. fixes #735).