Import test changes from V8

Merge pull request #1961 from test262-automation/javascriptcore-test262-automation-export-89489cb6f5

Import test changes from JavaScriptCore

harness: make $262.agent.waitUntil check if a typed array can be shared before proceeding.

Migrating all tests to this API is necessary to prevent tests from hanging indefinitely when a SAB is sent to a worker but the code in the worker attempts to create a non-sharable TypedArray (something that is not Int32Array or BigInt64Array). When that scenario occurs, an exception is thrown and the agent worker can no longer communicate with any other threads that control the SAB. If the main thread happens to be spinning in the $262.agent.waitUntil() while loop, it will never meet its termination condition and the test will hang indefinitely.

Because we've defined $262.agent.broadcast(SAB) in https://github.com/tc39/test262/blob/master/INTERPRETING.md, there are host implementations that assume compatibility, which must be maintained.

Migrating all tests to this API is necessary to prevent tests from hanging indefinitely when a SAB is sent to a worker but the code in the worker attempts to create a non-sharable TypedArray (something that is not Int32Array or BigInt64Array). When that scenario occurs, an exception is thrown and the agent worker can no longer communicate with any other threads that control the SAB. If the main thread happens to be spinning in the $262.agent.waitUntil() while loop, it will never meet its termination condition and the test will hang indefinitely.

Because we've defined $262.agent.broadcast(SAB) in https://github.com/tc39/test262/blob/master/INTERPRETING.md, there are host implementations that assume compatibility, which must be maintained.

[v8-test262-automation] Updated curation log with latest revision sha's from export and changed files.
    sourceRevisionAtLastExport: 3a8c8082 targetRevisionAtLastExport: 9166165df7

[v8-test262-automation] Changes from https://github.com/v8/v8.git at sha 3a8c8082 on Fri Nov 16 2018 19:00:23 GMT+0000 (Coordinated Universal Time)

[javascriptcore-test262-automation] Updated curation log with latest revision sha's from export and changed files.
    sourceRevisionAtLastExport: 0cfa6086eb targetRevisionAtLastExport: 89489cb6f5

[javascriptcore-test262-automation] Changes from https://github.com/webkit/webkit.git at sha 0cfa6086eb on Fri Nov 16 2018 18:57:37 GMT+0000 (Coordinated Universal Time)

[v8-test262-automation] Updated curation log with latest revision sha's from export and changed files.
    sourceRevisionAtLastExport: ac250b9b targetRevisionAtLastExport: 6218e682b2

[v8-test262-automation] Changes from https://github.com/v8/v8.git at sha ac250b9b on Wed Nov 14 2018 18:59:57 GMT+0000 (Coordinated Universal Time)

[javascriptcore-test262-automation] Updated curation log with latest revision sha's from export and changed files.
    sourceRevisionAtLastExport: 38e0e5eed1 targetRevisionAtLastExport: 33df80e9ad

[javascriptcore-test262-automation] Changes from https://github.com/webkit/webkit.git at sha 38e0e5eed1 on Wed Nov 14 2018 18:57:07 GMT+0000 (Coordinated Universal Time)

Update generated tests

Also remove the onlyStrict restriction as the class body is always on strict mode and
the failures are still valid

[javascriptcore-test262-automation] Updated curation log with latest revision sha's from export and changed files.
    sourceRevisionAtLastExport: b85a66fba6 targetRevisionAtLastExport: 6059c1c5

[javascriptcore-test262-automation] Changes from https://github.com/webkit/webkit.git at sha b85a66fba6 on Tue Nov 13 2018 18:55:51 GMT+0000 (Coordinated Universal Time)

[v8-test262-automation] Updated curation log with latest revision sha's from export and changed files.
    sourceRevisionAtLastExport: f4a586f0 targetRevisionAtLastExport: 43cce788

[v8-test262-automation] Changes from https://github.com/v8/v8.git at sha f4a586f0 on Mon Nov 12 2018 18:57:21 GMT+0000 (Coordinated Universal Time)

Move `throw "…"` for negative parsing errors to a helper function

Fix typo (disinct -> distinct)

Import test changes from V8

[v8-test262-automation] Updated curation log with latest revision sha's from export and changed files.
    sourceRevisionAtLastExport: d540724b targetRevisionAtLastExport: 713af1bb

[v8-test262-automation] Changes from https://github.com/v8/v8.git at sha d540724b on Fri Nov 09 2018 18:55:42 GMT+0000 (Coordinated Universal Time)

Merge pull request #1940 from test262-automation/javascriptcore-test262-automation-export-81663e45

Import test changes from JavaScriptCore

Import test changes from V8

[v8-test262-automation] Updated curation log with latest revision sha's from export and changed files.
    sourceRevisionAtLastExport: 010b5d67 targetRevisionAtLastExport: 04839204