Use ICU case conversion/transliterator for case conversion behind a flag

test/intl/testcfg.py

 # Copyright 2013 the V8 project authors. All rights reserved.
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #     * Redistributions of source code must retain the above copyright
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 #     * Redistributions in binary form must reproduce the above
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@@ skipping 37 matching lines @@
             filename != "utils.js" and filename != "regexp-assert.js" and
             filename != "regexp-prepare.js"):
           fullpath = os.path.join(dirname, filename)
           relpath = fullpath[len(self.root) + 1 : -3]
           testname = relpath.replace(os.path.sep, "/")
           test = testcase.TestCase(self, testname)
           tests.append(test)
     return tests
 
   def GetFlagsForTestCase(self, testcase, context):
-    flags = ["--allow-natives-syntax"] + context.mode_flags
+    flags = ["--allow_natives_syntax", "--icu_case_mapping"] + \
+        context.mode_flags
 
     files = []
     files.append(os.path.join(self.root, "assert.js"))
     files.append(os.path.join(self.root, "utils.js"))
     files.append(os.path.join(self.root, "regexp-prepare.js"))
     files.append(os.path.join(self.root, testcase.path + self.suffix()))
     files.append(os.path.join(self.root, "regexp-assert.js"))
 
     flags += files
     if context.isolates:
       flags.append("--isolate")
       flags += files
 
     return testcase.flags + flags
 
 
 def GetSuite(name, root):
   return IntlTestSuite(name, root)