Generate tests for 16e66ece (#901)

...xpressions/array/spread-err-mult-err-obj-getter-throws.js

...expressions/array/spread-err-mult-err-obj-unresolvable.js

...xpressions/array/spread-err-sngl-err-obj-getter-throws.js

...expressions/array/spread-err-sngl-err-obj-unresolvable.js

test/language/expressions/array/spread-mult-obj-base.js

test/language/expressions/array/spread-mult-obj-empty.js

test/language/expressions/array/spread-mult-obj-ident.js

...expressions/array/spread-mult-obj-null-empty-undefined.js

test/language/expressions/array/spread-mult-obj-null.js

test/language/expressions/array/spread-mult-obj-undefined.js

...anguage/expressions/array/spread-obj-getter-descriptor.js

test/language/expressions/array/spread-obj-getter-init.js

...sions/array/spread-obj-manipulate-outter-obj-in-getter.js

...nguage/expressions/array/spread-obj-mult-spread-getter.js

test/language/expressions/array/spread-obj-mult-spread.js

test/language/expressions/array/spread-obj-null.js

...nguage/expressions/array/spread-obj-override-immutable.js

...expressions/array/spread-obj-overrides-prev-properties.js

test/language/expressions/array/spread-obj-setter-redef.js

...guage/expressions/array/spread-obj-skip-non-enumerable.js