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

test/language/module-code/decl-pos-import-object-method.js

test/language/module-code/decl-pos-import-object-setter.js

.../language/module-code/decl-pos-import-switch-case-dflt.js

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

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

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

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

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

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

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

test/language/module-code/strict-mode.js

test/language/reserved-words/await-module.js

test/language/reserved-words/await-script.js