Merge pull request #1315 from cxielarko/bigint-ta-2

.../built-ins/TypedArrays/BigInt64Array/BYTES_PER_ELEMENT.js

test/built-ins/TypedArrays/BigInt64Array/constructor.js

test/built-ins/TypedArrays/BigInt64Array/length.js

test/built-ins/TypedArrays/BigInt64Array/name.js

test/built-ins/TypedArrays/BigInt64Array/prop-desc.js

test/built-ins/TypedArrays/BigInt64Array/proto.js

test/built-ins/TypedArrays/BigInt64Array/prototype.js

.../TypedArrays/BigInt64Array/prototype/BYTES_PER_ELEMENT.js

...lt-ins/TypedArrays/BigInt64Array/prototype/constructor.js

...edArrays/BigInt64Array/prototype/not-typedarray-object.js

test/built-ins/TypedArrays/BigInt64Array/prototype/proto.js

...built-ins/TypedArrays/BigUint64Array/BYTES_PER_ELEMENT.js

test/built-ins/TypedArrays/BigUint64Array/constructor.js

test/built-ins/TypedArrays/BigUint64Array/length.js

test/built-ins/TypedArrays/BigUint64Array/name.js

test/built-ins/TypedArrays/BigUint64Array/prop-desc.js

test/built-ins/TypedArrays/BigUint64Array/proto.js

test/built-ins/TypedArrays/BigUint64Array/prototype.js

...TypedArrays/BigUint64Array/prototype/BYTES_PER_ELEMENT.js

...t-ins/TypedArrays/BigUint64Array/prototype/constructor.js