8011421: When using Object.defineProperty on arrays, PropertyDescriptor's property accessors are invoked multiple times

8011394: RegExp.prototype.test() does not call valueOf on lastIndex property as per the spec.

8011382: Data prototype methods and constructor do not call user defined toISOString, valueOf methods per spec.

8007774: Enable code cache again

8011365: Array.prototype.join and Array.prototype.toString do not throw TypeError on null, undefined

8011362: Overloaded method resolution foiled by nulls

8011357: Array.prototype.slice and Array.prototype.splice should not call user defined valueOf of start, end arguments more than once

8011274: Object.getOwnPropertyDescriptor(function(){"use strict"},"caller").get.hasOwnProperty("prototype") should be false

8011237: Object.isExtensible(Object.getOwnPropertyDescriptor(function(){"use strict"},"caller").get) should be false

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