Remove support for Mac OS X Leopard (10.5)

Source/wtf/unicode/icu/CollatorICU.cpp

 /*
  * Copyright (C) 2008 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
@@ skipping 44 matching lines @@
     : m_collator(0)
     , m_locale(locale ? strdup(locale) : 0)
     , m_lowerFirst(false)
 {
 }
 
 PassOwnPtr<Collator> Collator::userDefault()
 {
 #if OS(DARWIN) && USE(CF)
     // Mac OS X doesn't set UNIX locale to match user-selected one, so ICU default doesn't work.
-#if __MAC_OS_X_VERSION_MIN_REQUIRED >= 1060
     RetainPtr<CFLocaleRef> currentLocale(AdoptCF, CFLocaleCopyCurrent());
     CFStringRef collationOrder = (CFStringRef)CFLocaleGetValue(currentLocale.get(), kCFLocaleCollatorIdentifier);
-#else
-    RetainPtr<CFStringRef> collationOrderRetainer(AdoptCF, (CFStringRef)CFPreferencesCopyValue(CFSTR("AppleCollationOrder"), kCFPreferencesAnyApplication, kCFPreferencesCurrentUser, kCFPreferencesAnyHost));
-    CFStringRef collationOrder = collationOrderRetainer.get();
-#endif
     char buf[256];
     if (!collationOrder)
         return adoptPtr(new Collator(""));
     CFStringGetCString(collationOrder, buf, sizeof(buf), kCFStringEncodingASCII);
     return adoptPtr(new Collator(buf));
 #else
     return adoptPtr(new Collator(0));
 #endif
 }
 
@@ skipping 62 matching lines @@
         if (cachedCollator)
             ucol_close(cachedCollator);
         cachedCollator = m_collator;
         m_collator  = 0;
     }
 }
 
 } // namespace WTF
 
 #endif // !UCONFIG_NO_COLLATION