(svn r11886) -Add: sort the strings in languages dropdown

src/strings_func.h

@@ -69,6 +69,12 @@ void InitializeLanguagePacks();
 
 int CDECL StringIDSorter(const void *a, const void *b);
 
+/** Key comparison function for std::map */
+struct StringIDCompare
+{
+	bool operator()(StringID s1, StringID s2) { return StringIDSorter(&s1, &s2) < 0; }
+};
+
 void CheckForMissingGlyphsInLoadedLanguagePack();
 
 #endif /* STRINGS_TYPE_H */