Eliminate the wstring game name.

Some cleanup throughout related code. (try to make logic in ISOFile understandable by a human)
Encode strings in UTF-8 rather than somehow trying to determine the encoding in the GUI code.

Non-windows OSes temporarily broken.

Source/Core/DiscIO/Src/VolumeDirectory.h

@@ -50,7 +50,7 @@ public:
 
 	std::string GetMakerID() const;
 
-	std::string GetName() const;
+	std::vector<std::string> GetNames() const;
 	void SetName(std::string);
 
 	u32 GetFSTSize() const;