Bug 1465039 - Update test262. r=anba

--HG--
rename : js/src/tests/test262/built-ins/Array/prototype/flatten/array-like-objects.js => js/src/tests/test262/built-ins/Array/prototype/flat/array-like-objects.js
rename : js/src/tests/test262/built-ins/Array/prototype/flatten/bound-function-call.js => js/src/tests/test262/built-ins/Array/prototype/flat/bound-function-call.js
rename : js/src/tests/test262/built-ins/Array/prototype/flatten/browser.js => js/src/tests/test262/built-ins/Array/prototype/flat/browser.js
rename : js/src/tests/test262/built-ins/Array/prototype/flatten/empty-array-elements.js => js/src/tests/test262/built-ins/Array/prototype/flat/empty-array-elements.js
rename : js/src/tests/test262/built-ins/Array/prototype/flatten/empty-object-elements.js => js/src/tests/test262/built-ins/Array/prototype/flat/empty-object-elements.js
rename : js/src/tests/test262/built-ins/Array/prototype/flatten/length.js => js/src/tests/test262/built-ins/Array/prototype/flat/length.js
rename : js/src/tests/test262/built-ins/Array/prototype/flatten/name.js => js/src/tests/test262/built-ins/Array/prototype/flat/name.js
rename : js/src/tests/test262/built-ins/Array/prototype/flatten/non-numeric-depth-should-not-throw.js => js/src/tests/test262/built-ins/Array/prototype/flat/non-numeric-depth-should-not-throw.js
rename : js/src/tests/test262/built-ins/Array/prototype/flatten/non-object-ctor-throws.js => js/src/tests/test262/built-ins/Array/prototype/flat/non-object-ctor-throws.js
rename : js/src/tests/test262/built-ins/Array/prototype/flatten/null-undefined-elements.js => js/src/tests/test262/built-ins/Array/prototype/flat/null-undefined-elements.js
rename : js/src/tests/test262/built-ins/Array/prototype/flatten/null-undefined-input-throws.js => js/src/tests/test262/built-ins/Array/prototype/flat/null-undefined-input-throws.js
rename : js/src/tests/test262/built-ins/Array/prototype/flatten/positive-infinity.js => js/src/tests/test262/built-ins/Array/prototype/flat/positive-infinity.js
rename : js/src/tests/test262/built-ins/Array/prototype/flatten/prop-desc.js => js/src/tests/test262/built-ins/Array/prototype/flat/prop-desc.js
rename : js/src/tests/test262/built-ins/Array/prototype/flatten/shell.js => js/src/tests/test262/built-ins/Array/prototype/flat/shell.js
rename : js/src/tests/test262/built-ins/Array/prototype/flatten/symbol-object-create-null-depth-throws.js => js/src/tests/test262/built-ins/Array/prototype/flat/symbol-object-create-null-depth-throws.js
extra : rebase_source : 26a1d0aab8066b287b5d4041f7fc5b4679aa93f1