Added validator for locales based on all strings in the source code.

It checks:
 - whether all keys used by the program are in the locale
 - whether the right number of %s are used
 - if there are no extra keys in the locale that shouldn't be there
This will become very useful when translations need to be updated for new MSE versions.

There is a perl script for generating the 'expected_locale_keys' resource file.
This file contains a list of all the locale keys used.
This is a resource and not a data file because it is automatically generated from the code,
 the user has no business modifying it.

I also fixed all the locale errors I found in the process.

git-svn-id: svn://svn.code.sf.net/p/magicseteditor/code/trunk@613 0fc631ac-6414-0410-93d0-97cfa31319b6

src/data/locale.hpp

@@ -16,6 +16,7 @@
 
 DECLARE_POINTER_TYPE(Locale);
 DECLARE_POINTER_TYPE(SubLocale);
+class SubLocaleValidator;
 
 // ----------------------------------------------------------------------------- : Locale class
 
@@ -29,6 +30,9 @@ class SubLocale : public IntrusivePtrBase<SubLocale> {
 	/// Translate a key with a default value
 	String tr(const String& key, const String& def);
 	
+	/// Is this a valid sublocale? Returns errors
+	String validate(const String& name, const SubLocaleValidator&) const;
+	
 	DECLARE_REFLECTION();
 };
 
@@ -47,6 +51,9 @@ class Locale : public Packaged {
 	/// Open a locale with the given name
 	static LocaleP byName(const String& name);
 	
+	/// Validate that the locale is valid for this MSE version
+	virtual void validate(Version = app_version);
+	
   protected:
 	String typeName() const;
 	DECLARE_REFLECTION();