Add tests for destructuring assignment

...signment/destructuring/array-elem-target-yield-invalid.js

...assignment/destructuring/array-elem-target-yield-valid.js

...guage/expressions/assignment/destructuring/array-empty.js

...e/expressions/assignment/destructuring/array-iteration.js

...ions/assignment/destructuring/array-rest-after-element.js

...ions/assignment/destructuring/array-rest-after-elision.js

...ons/assignment/destructuring/array-rest-before-element.js

...ons/assignment/destructuring/array-rest-before-elision.js

...ssions/assignment/destructuring/array-rest-before-rest.js

...ns/assignment/destructuring/array-rest-elision-invalid.js

...xpressions/assignment/destructuring/array-rest-elision.js

...e/expressions/assignment/destructuring/array-rest-init.js

...ressions/assignment/destructuring/array-rest-iteration.js

...signment/destructuring/array-rest-nested-array-invalid.js

.../assignment/destructuring/array-rest-nested-array-null.js

...t/destructuring/array-rest-nested-array-undefined-hole.js

...nt/destructuring/array-rest-nested-array-undefined-own.js

...gnment/destructuring/array-rest-nested-array-undefined.js

...nment/destructuring/array-rest-nested-array-yield-expr.js

...tructuring/array-rest-nested-array-yield-ident-invalid.js