Update to ES2015 == semantics for Symbol/SIMD wrappers

test/test262/test262.status

 # Copyright 2011 the V8 project authors. All rights reserved.
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 # modification, are permitted provided that the following conditions are
 # met:
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 #     * Redistributions of source code must retain the above copyright
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 #       copyright notice, this list of conditions and the following
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@@ skipping 602 matching lines @@
   'built-ins/String/prototype/toUpperCase/supplementary_plane': [FAIL],
 
   # https://code.google.com/p/v8/issues/detail?id=4477
   'intl402/String/prototype/toLocaleLowerCase/special_casing_Azeri': [FAIL],
   'intl402/String/prototype/toLocaleLowerCase/special_casing_Lithuanian': [FAIL],
   'intl402/String/prototype/toLocaleLowerCase/special_casing_Turkish': [FAIL],
   'intl402/String/prototype/toLocaleUpperCase/special_casing_Azeri': [FAIL],
   'intl402/String/prototype/toLocaleUpperCase/special_casing_Lithuanian': [FAIL],
   'intl402/String/prototype/toLocaleUpperCase/special_casing_Turkish': [FAIL],
 
-  # https://code.google.com/p/v8/issues/detail?id=3788
-  'language/expressions/equals/coerce-symbol-to-prim-return-prim': [FAIL],
-
   ######################## NEEDS INVESTIGATION ###########################
 
   # These test failures are specific to the intl402 suite and need investigation
   # to be either marked as bugs with issues filed for them or as deliberate
   # incompatibilities if the test cases turn out to be broken or ambiguous.
   # Some of these are related to v8:4361 in being visible side effects from Intl.
   'intl402/6.2.3': [FAIL],
   'intl402/9.2.1_2': [FAIL],
   'intl402/9.2.6_2': [FAIL],
   'intl402/Collator/10.1.2.1_4': [FAIL],
@@ skipping 134 matching lines @@
 
   # BUG(3251225): Tests that timeout with --nocrankshaft.
   'built-ins/decodeURI/S15.1.3.1_A2.4_T1': [SKIP],
   'built-ins/decodeURI/S15.1.3.1_A2.5_T1': [SKIP],
   'built-ins/decodeURIComponent/S15.1.3.2_A2.4_T1': [SKIP],
   'built-ins/decodeURIComponent/S15.1.3.2_A2.5_T1': [SKIP],
   'built-ins/encodeURI/S15.1.3.3_A2.3_T1': [SKIP],
   'built-ins/encodeURIComponent/S15.1.3.4_A2.3_T1': [SKIP],
 }],  # 'arch == arm or arch == mipsel or arch == mips or arch == arm64'
 ]