Merge pull request #539 from bocoup/id-to-esid

test/language/module-code/decl-pos-export-switch-case.js

test/language/module-code/decl-pos-export-switch-dftl.js

...language/module-code/decl-pos-export-try-catch-finally.js

test/language/module-code/decl-pos-export-try-catch.js

test/language/module-code/decl-pos-export-try-finally.js

test/language/module-code/decl-pos-export-try-try.js

test/language/module-code/decl-pos-export-while.js

test/language/module-code/decl-pos-import-arrow-function.js

test/language/module-code/decl-pos-import-block-stmt-list.js

test/language/module-code/decl-pos-import-block-stmt.js

...age/module-code/decl-pos-import-class-decl-meth-static.js

test/language/module-code/decl-pos-import-class-decl-meth.js

...dule-code/decl-pos-import-class-decl-method-gen-static.js

...uage/module-code/decl-pos-import-class-decl-method-gen.js

...module-code/decl-pos-import-class-expr-meth-gen-static.js

...nguage/module-code/decl-pos-import-class-expr-meth-gen.js

...age/module-code/decl-pos-import-class-expr-meth-static.js

test/language/module-code/decl-pos-import-class-expr-meth.js

test/language/module-code/decl-pos-import-do-while.js

test/language/module-code/decl-pos-import-for-const.js