Update unicode to 7.0.0.

tools/gyp/v8.gyp

 # Copyright 2012 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
 #       notice, this list of conditions and the following disclaimer.
 #     * Redistributions in binary form must reproduce the above
 #       copyright notice, this list of conditions and the following
 #       disclaimer in the documentation and/or other materials provided
@@ skipping 790 matching lines @@
         '../../src/types-inl.h',
         '../../src/types.cc',
         '../../src/types.h',
         '../../src/typing.cc',
         '../../src/typing.h',
         '../../src/unbound-queue-inl.h',
         '../../src/unbound-queue.h',
         '../../src/unicode-inl.h',
         '../../src/unicode.cc',
         '../../src/unicode.h',
+        '../../src/unicode-decoder.cc',
+        '../../src/unicode-decoder.h',
         '../../src/unique.h',
         '../../src/uri.h',
         '../../src/utils-inl.h',
         '../../src/utils.cc',
         '../../src/utils.h',
         '../../src/v8.cc',
         '../../src/v8.h',
         '../../src/v8memory.h',
         '../../src/v8threads.cc',
         '../../src/v8threads.h',
@@ skipping 866 matching lines @@
       'target_name': 'mksnapshot',
       'type': 'executable',
       'dependencies': ['v8_base', 'v8_nosnapshot', 'v8_libplatform'],
       'include_dirs+': [
         '../..',
       ],
       'sources': [
         '../../src/mksnapshot.cc',
       ],
       'conditions': [
+        ['v8_enable_i18n_support==1', {
+          'dependencies': [
+            '<(icu_gyp_path):icui18n',
+            '<(icu_gyp_path):icuuc',
+          ]
+        }],
         ['want_separate_host_toolset==1', {
           'toolsets': ['host'],
         }, {
           'toolsets': ['target'],
         }],
         ['v8_compress_startup_data=="bz2"', {
           'libraries': [
             '-lbz2',
           ]
         }],
       ],
     },
   ],
 }