allow to use multiple locale directories

remove config options:
- locale_dir
- locale_dir_default

add a config option:
- locale_dirs - a list of directories with locale files (translations)

We start reading locale from the first directory and files with the same name
in each directory are concatenated.

winixd/templates/templates.cpp

@@ -4,8 +4,8 @@
  * Author: Tomasz Sowa <t.sowa@ttmath.org>
  */
 
-/* 
- * Copyright (c) 2008-2024, Tomasz Sowa
+/*
+ * Copyright (c) 2008-2026, Tomasz Sowa
  * All rights reserved.
  * 
  * Redistribution and use in source and binary forms, with or without
@@ -678,10 +678,11 @@ void Templates::CreateFunctions()
 
 void Templates::ReadLocale()
 {
+	TemplatesFunctions::locale.SetDirectories(config->locale_dirs);
 	TemplatesFunctions::locale.SetLocaleFiles(config->locale_files);
 	TemplatesFunctions::locale.SetLocaleMaxId(config->locale_max_id);
 	TemplatesFunctions::locale.SetDefLang(config->locale_default_id);
-	TemplatesFunctions::locale.Read(config->locale_dir, config->locale_dir_default);
+	TemplatesFunctions::locale.ReadLocales();
 
 	log << log3 << "Templates: there are " << TemplatesFunctions::locale.Size() << " locales" << logend;
 }