- "CannotSuspendMainAgent" feature was changed to "CanBlockIsFalse" flag
- Move annex-b tests into annex-b directory
- Update variable names in nonshared-int-views.js tests
- Move getReport() call in nan-for-timeout.js to avoid iloop
- Update BigInt constructor to match new semantics (tc39/proposal-bigint#138)

Corrections to sec-web-compat-evaldeclarationinstantiation and sec-web-compat-functiondeclarationinstantiation tests. Fixes gh-1364 (#1509)

These tests ensure that the annex B extensions for function declarations
are *not* observed in strict mode code.