Mark QLocale's Language, Country and Script enums as ushort

The code pervasively presumes their values can be held in a ushort, so
make sure the compiler knows we expect that to work (and doesn't
complain about narrowing when we do convert them to ushort).

Change-Id: Idde7be6cceee8a6dae333c5b1d5a0120fec32e4a
Reviewed-by: Andrei Golubev <andrei.golubev@qt.io>
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>

src/corelib/text/qlocale.h

@@ -74,7 +74,7 @@ class Q_CORE_EXPORT QLocale
 public:
 // see qlocale_data_p.h for more info on generated data
 // GENERATED PART STARTS HERE
-    enum Language {
+    enum Language : ushort {
         AnyLanguage = 0,
         C = 1,
         Abkhazian = 2,
@@ -464,7 +464,7 @@ public:
         LastLanguage = Silesian
     };
 
-    enum Script {
+    enum Script : ushort {
         AnyScript = 0,
         ArabicScript = 1,
         CyrillicScript = 2,
@@ -614,7 +614,7 @@ public:
         LastScript = JamoScript
     };
 
-    enum Country {
+    enum Country : ushort {
         AnyCountry = 0,
         Afghanistan = 1,
         Albania = 2,

util/locale_database/qlocalexml2cpp.py

@@ -468,7 +468,7 @@ class LocaleHeaderWriter (SourceFileEditor):
     def __enum(self, name, book, alias):
         assert book
         out, dupes = self.writer.write, self.__dupes
-        out('    enum {} {{\n'.format(name))
+        out('    enum {} : ushort {{\n'.format(name))
         for key, value in book.items():
             member = value[0]
             if name == 'Script':