BitField: Add an explicit getter function for retrieving the BitField value.

Sometimes (in particular when using non-typesafe functions) it can be convenient to have a getter method rather than performing a potentially lengthy explicit cast.

Source/Core/Common/BitField.h

@@ -147,7 +147,7 @@ public:
 		return *this;
 	}
 
-	__forceinline operator T() const
+	__forceinline T Value() const
 	{
 		if (std::numeric_limits<T>::is_signed)
 		{
@@ -160,6 +160,11 @@ public:
 		}
 	}
 
+	__forceinline operator T() const
+	{
+		return Value();
+	}
+
 private:
 	// StorageType is T for non-enum types and the underlying type of T if
 	// T is an enumeration. Note that T is wrapped within an enable_if in the