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/BannerLoaderWii.h

@@ -35,13 +35,9 @@ class CBannerLoaderWii
 
 		virtual bool GetBanner(u32* _pBannerImage);
 
-		virtual bool GetName(std::string* _rName);
-
-		bool GetName(std::vector<std::wstring>&  _rNames);
-
-		virtual bool GetCompany(std::string& _rCompany);
-
-		virtual bool GetDescription(std::string* _rDescription);
+		virtual std::vector<std::string> GetNames();
+		virtual std::string GetCompany();
+		virtual std::vector<std::string> GetDescriptions();
 
 	private: