[Interpreter] Adds support for const/let variables to interpreter.

test/test262/test262.status

 # Copyright 2011 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 546 matching lines @@
   'language/expressions/assignment/destructuring/*': [SKIP],
   'language/expressions/class/*': [SKIP],
   'language/expressions/generators/*': [SKIP],
   'language/expressions/instanceof/primitive-prototype-with-object': [SKIP],
   'language/expressions/instanceof/prototype-getter-with-object-throws': [SKIP],
   'language/expressions/instanceof/prototype-getter-with-object': [SKIP],
   'language/expressions/object/method-definition/yield*': [SKIP],
   'language/expressions/object/method-definition/generator*': [SKIP],
   'language/expressions/yield/*': [SKIP],
   'language/statements/class/*': [SKIP],
-  'language/statements/const/*': [SKIP],
   'language/statements/generators/*': [SKIP],
 
   'built-ins/Array/prototype/concat/Array.prototype.concat_non-array': [SKIP],
   'built-ins/Date/prototype/toISOString/15.9.5.43-0-13': [SKIP],
   'built-ins/Object/prototype/hasOwnProperty/S15.2.4.5_A12': [SKIP],
   'built-ins/Object/prototype/isPrototypeOf/S15.2.4.6_A12': [SKIP],
   'built-ins/Object/prototype/propertyIsEnumerable/S15.2.4.7_A12': [SKIP],
   'built-ins/Object/prototype/toLocaleString/S15.2.4.3_A12': [SKIP],
   'built-ins/Object/prototype/toString/15.2.4.2-1-1': [SKIP],
   'built-ins/Object/prototype/toString/15.2.4.2-1-2': [SKIP],
@@ skipping 17 matching lines @@
   'built-ins/String/prototype/trim/15.5.4.20-1-1': [SKIP],
   'language/block-scope/leave/nested-block-let-declaration-only-shadows-outer-parameter-value-1': [SKIP],
   'language/block-scope/leave/nested-block-let-declaration-only-shadows-outer-parameter-value-2': [SKIP],
   'language/block-scope/leave/verify-context-in-labelled-block': [SKIP],
   'language/block-scope/leave/x-after-break-to-label': [SKIP],
   'language/computed-property-names/object/accessor/getter-super': [SKIP],
   'language/computed-property-names/object/accessor/setter-super': [SKIP],
   'language/computed-property-names/object/method/super': [SKIP],
   'language/default-parameters/class-definitions': [SKIP],
   'language/default-parameters/generators': [SKIP],
-  'language/default-parameters/param-ref-uninitialized': [SKIP],
   'language/expressions/object/method-definition/name-prop-name-yield-expr': [SKIP],
   'language/expressions/object/method-definition/name-super-prop-param': [SKIP],
   'language/expressions/object/method-definition/name-super-prop-body': [SKIP],
   'language/expressions/tagged-template/call-expression-context-no-strict': [SKIP],
   'language/expressions/tagged-template/call-expression-context-strict': [SKIP],
   'language/expressions/template-literal/evaluation-order': [SKIP],
-  'language/statements/for-in/const-bound-names-fordecl-tdz-for-in': [SKIP],
-  'language/statements/for-in/let-bound-names-fordecl-tdz-for-in': [SKIP],
   'language/statements/for-of/body-dstr-assign': [SKIP],
   'language/statements/for-of/break': [SKIP],
   'language/statements/for-of/break-from-catch': [SKIP],
   'language/statements/for-of/break-from-finally': [SKIP],
   'language/statements/for-of/break-from-try': [SKIP],
   'language/statements/for-of/break-label': [SKIP],
   'language/statements/for-of/break-label-from-catch': [SKIP],
   'language/statements/for-of/break-label-from-finally': [SKIP],
   'language/statements/for-of/break-label-from-try': [SKIP],
-  'language/statements/for-of/const-bound-names-fordecl-tdz-for-of': [SKIP],
   'language/statements/for-of/continue': [SKIP],
   'language/statements/for-of/continue-from-catch': [SKIP],
   'language/statements/for-of/continue-from-finally': [SKIP],
   'language/statements/for-of/continue-from-try': [SKIP],
   'language/statements/for-of/continue-label': [SKIP],
   'language/statements/for-of/continue-label-from-catch': [SKIP],
   'language/statements/for-of/continue-label-from-finally': [SKIP],
   'language/statements/for-of/continue-label-from-try': [SKIP],
   'language/statements/for-of/generator': [SKIP],
   'language/statements/for-of/generator-next-error': [SKIP],
-  'language/statements/for-of/let-bound-names-fordecl-tdz-for-of': [SKIP],
   'language/statements/for-of/nested': [SKIP],
   'language/statements/for-of/return': [SKIP],
   'language/statements/for-of/return-from-catch': [SKIP],
   'language/statements/for-of/return-from-finally': [SKIP],
   'language/statements/for-of/return-from-try': [SKIP],
   'language/statements/for-of/throw': [SKIP],
   'language/statements/for-of/throw-from-catch': [SKIP],
   'language/statements/for-of/throw-from-finally': [SKIP],
   'language/statements/for-of/yield': [SKIP],
   'language/statements/for-of/yield-from-catch': [SKIP],
   'language/statements/for-of/yield-from-finally': [SKIP],
   'language/statements/for-of/yield-from-try': [SKIP],
   'language/statements/for-of/yield-star': [SKIP],
   'language/statements/for-of/yield-star-from-catch': [SKIP],
   'language/statements/for-of/yield-star-from-finally': [SKIP],
   'language/statements/for-of/yield-star-from-try': [SKIP],
   'language/object-literal/concise-generator': [SKIP],
   'language/object-literal/getter': [SKIP],
   'language/object-literal/method': [SKIP],
   'language/object-literal/setter': [SKIP],
   'language/rest-parameters/with-new-target': [SKIP],
   'language/statements/do-while/S12.6.1_A4_T5': [SKIP],
-  'language/statements/let/block-local-closure-get-before-initialization': [SKIP],
-  'language/statements/let/block-local-closure-set-before-initialization': [SKIP],
-  'language/statements/let/block-local-use-before-initialization-in-declaration-statement': [SKIP],
-  'language/statements/let/block-local-use-before-initialization-in-prior-statement': [SKIP],
-  'language/statements/let/function-local-closure-get-before-initialization': [SKIP],
-  'language/statements/let/function-local-closure-set-before-initialization': [SKIP],
-  'language/statements/let/function-local-use-before-initialization-in-declaration-statement': [SKIP],
-  'language/statements/let/function-local-use-before-initialization-in-prior-statement': [SKIP],
-  'language/statements/let/global-closure-get-before-initialization': [SKIP],
-  'language/statements/let/global-closure-set-before-initialization': [SKIP],
-  'language/statements/let/global-use-before-initialization-in-declaration-statement': [SKIP],
-  'language/statements/let/global-use-before-initialization-in-prior-statement': [SKIP],
   'language/statements/while/S12.6.2_A4_T5': [SKIP],
 
 }],  # ignition == True
 
 ['ignition == True and (arch == arm or arch == arm64)', {
   'built-ins/decodeURI/S15.1.3.1_A1.12_T3': [SKIP],
   'built-ins/decodeURIComponent/S15.1.3.2_A1.10_T1': [SKIP],
   'built-ins/decodeURIComponent/S15.1.3.2_A1.11_T2': [SKIP],
   'built-ins/decodeURIComponent/S15.1.3.2_A1.12_T2': [SKIP],
   'built-ins/decodeURIComponent/S15.1.3.2_A1.12_T3': [SKIP],
   'intl402/9.2.2': [SKIP],
   'language/statements/let/fn-name-arrow': [SKIP],
   'language/statements/let/fn-name-cover': [SKIP],
   'language/statements/let/fn-name-fn': [SKIP],
   'language/statements/let/fn-name-gen': [SKIP],
 }],  # ignition == True and (arch == arm or arch == arm64)
 
 ]