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

test/test262/test262.status

Index: test/test262/test262.status
diff --git a/test/test262/test262.status b/test/test262/test262.status
index 673177a0fcddf75a1e5f7ef47f42fca6c7d2341d..076069ca2351209dced60c3f37e30a7b314f9076 100644
--- a/test/test262/test262.status
+++ b/test/test262/test262.status
@@ -564,7 +564,6 @@
   '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],
@@ -602,15 +601,12 @@
   '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],
@@ -620,7 +616,6 @@
   '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],
@@ -631,7 +626,6 @@
   '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],
@@ -654,18 +648,6 @@
   '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