Tests for `export * as ns from 'foo'` syntax (#1498)

features.txt

test/language/module-code/early-dup-export-as-star-as.js

test/language/module-code/early-dup-export-id-as.js

test/language/module-code/early-dup-export-star-as-dflt.js

test/language/module-code/eval-rqstd-once.js

test/language/module-code/eval-rqstd-order-9_FIXTURE.js

test/language/module-code/eval-rqstd-order.js

test/language/module-code/eval-self-once.js

test/language/module-code/instn-once.js

test/language/module-code/instn-resolve-empty-export.js

test/language/module-code/instn-star-as-props-dflt-skip.js

...e/instn-star-props-dflt-skip-star-as-named-end_FIXTURE.js

...-code/instn-star-props-dflt-skip-star-as-named_FIXTURE.js

...de/instn-star-props-dflt-skip-star-as-prod-end_FIXTURE.js

...e-code/instn-star-props-dflt-skip-star-as-prod_FIXTURE.js

test/language/module-code/instn-star-props-nrml-1_FIXTURE.js

...anguage/module-code/instn-star-props-nrml-star_FIXTURE.js

test/language/module-code/instn-star-props-nrml.js

...rnals/get-nested-namespace-dflt-skip-named-end_FIXTURE.js

...internals/get-nested-namespace-dflt-skip-named_FIXTURE.js