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

...ernals/get-nested-namespace-dflt-skip-prod-end_FIXTURE.js

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

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

...ce/internals/get-nested-namespace-props-nrml-1_FIXTURE.js

...ce/internals/get-nested-namespace-props-nrml-2_FIXTURE.js

...ce/internals/get-nested-namespace-props-nrml-3_FIXTURE.js

...de/namespace/internals/get-nested-namespace-props-nrml.js

test/language/module-code/parse-err-export-dflt-expr.js

test/language/module-code/parse-err-invoke-anon-fun-decl.js

test/language/module-code/parse-err-invoke-anon-gen-decl.js

test/language/module-code/parse-err-semi-dflt-expr.js

test/language/module-code/parse-err-semi-export-star.js

.../language/module-code/parse-err-semi-name-space-export.js

.../language/module-code/parse-err-semi-named-export-from.js

test/language/module-code/parse-err-semi-named-export.js

test/language/module-code/parse-export-empty.js