This should be well covered in the syntax templates and opens the path for tests with module code restrictions

- Add cases for mixing module and script code
- Rename test case from return promise to thenable
- Fix script code case with valid loaded fixture
- Add a test to assert a promise return
- Add case for specifier toString rejection
- Add case for specifier toString
- Test Assignment expression abrupt completion
- Test Promise return

Import test changes from V8

Merge pull request #1857 from test262-automation/javascriptcore-test262-automation-export-5ca4d877

Import test changes from JavaScriptCore

[javascriptcore-test262-automation] Updated curation log with latest revision sha's from export and changed files.
    sourceRevisionAtLastExport: 2c8aa42eb8 targetRevisionAtLastExport: 5ca4d877

[javascriptcore-test262-automation] Changes from https://github.com/webkit/webkit.git at sha 2c8aa42eb8 on Wed Oct 10 2018 18:37:38 GMT+0000 (Coordinated Universal Time)

[v8-test262-automation] Updated curation log with latest revision sha's from export and changed files.
    sourceRevisionAtLastExport: c9524b41 targetRevisionAtLastExport: 1e2181be

[v8-test262-automation] Changes from https://github.com/v8/v8.git at sha c9524b41 on Tue Oct 09 2018 18:40:34 GMT+0000 (Coordinated Universal Time)

Import test changes from V8

More test cases for dynamic import

This was introduced in 6581e849.

[v8-test262-automation] Updated curation log with latest revision sha's from export and changed files.
    sourceRevisionAtLastExport: fdfdce1d targetRevisionAtLastExport: fd1b13ca

[v8-test262-automation] Changes from https://github.com/v8/v8.git at sha fdfdce1d on Mon Oct 08 2018 18:39:39 GMT+0000 (Coordinated Universal Time)

compare "numeric" as boolean instead of string

Merge pull request #1837 from test262-automation/javascriptcore-test262-automation-export-0e9545be99

Import test changes from JavaScriptCore

Import test changes from V8

[javascriptcore-test262-automation] Updated curation log with latest revision sha's from export and changed files.
    sourceRevisionAtLastExport: 3a8f232444 targetRevisionAtLastExport: 0e9545be99

[javascriptcore-test262-automation] Changes from https://github.com/webkit/webkit.git at sha 3a8f232444 on Sun Oct 07 2018 18:35:44 GMT+0000 (Coordinated Universal Time)

[v8-test262-automation] Updated curation log with latest revision sha's from export and changed files.
    sourceRevisionAtLastExport: 466306e9 targetRevisionAtLastExport: 4bc81c1dc2

[v8-test262-automation] Changes from https://github.com/v8/v8.git at sha 466306e9 on Sat Oct 06 2018 18:38:18 GMT+0000 (Coordinated Universal Time)

test

[javascriptcore-test262-automation] Updated curation log with latest revision sha's from export and changed files.
    sourceRevisionAtLastExport: 204d982056 targetRevisionAtLastExport: 0eb3a6f9e

[javascriptcore-test262-automation] Changes from https://github.com/webkit/webkit.git at sha 204d982056 on Fri Oct 05 2018 18:34:24 GMT+0000 (Coordinated Universal Time)

- Add cases for invalid syntax
- Add valid cases
- nested imports
- add non existent file case
- Fix cases and templates to use a full importcall expr token
- add case for call expression position
- remove unnecessary module flag from templates
- Add templates for nested with