win32: update readme.win and add italian language patch

desmume/src/windows/main.cpp

@@ -1887,6 +1887,11 @@ void SetLanguage(int langid)
 		setLanguage(MAKELCID(MAKELANGID(LANG_CHINESE, SUBLANG_CHINESE_SIMPLIFIED), SORT_DEFAULT));
 		SetThreadLocale(MAKELCID(MAKELANGID(LANG_CHINESE, SUBLANG_CHINESE_SIMPLIFIED), SORT_DEFAULT));
 		break;
+	case 4:
+		// Italian
+		setLanguage(MAKELCID(MAKELANGID(LANG_ITALIAN, SUBLANG_ITALIAN), SORT_DEFAULT));
+		SetThreadLocale(MAKELCID(MAKELANGID(LANG_ITALIAN, SUBLANG_ITALIAN), SORT_DEFAULT));
+		break;
 
 	default: break;
 		break;
@@ -4795,6 +4800,11 @@ LRESULT CALLBACK WindowProcedure (HWND hwnd, UINT message, WPARAM wParam, LPARAM
 			ChangeLanguage(3);
 			CheckLanguage(LOWORD(wParam));
 			return 0;
+		case IDC_LANGITALIAN:
+			SaveLanguage(4);
+			ChangeLanguage(4);
+			CheckLanguage(LOWORD(wParam));
+			return 0;
 		
 		case IDC_LANGDANISH:
 			SaveLanguage(2);

desmume/src/windows/resource.h

@@ -811,6 +811,7 @@
 #define IDM_RENDER_HQ2XS                60081
 #define IDM_RENDER_LQ2X                 60082
 #define IDM_RENDER_LQ2XS                60083
+#define IDC_LANGITALIAN                 60084
 
 // Next default values for new objects
 //