Merge pull request #1525 from anba/test-bugs-apr2018

features.txt

test/annexB/language/eval-code/direct/block-decl-nostrict.js

...xB/language/eval-code/direct/switch-case-decl-nostrict.js

...xB/language/eval-code/direct/switch-dflt-decl-nostrict.js

test/annexB/language/function-code/block-decl-nostrict.js

...nnexB/language/function-code/switch-case-decl-nostrict.js

...nnexB/language/function-code/switch-dflt-decl-nostrict.js

test/built-ins/Atomics/store/nonshared-int-views.js

test/built-ins/Atomics/sub/nonshared-int-views.js

test/built-ins/Atomics/wait/nan-for-timeout.js

test/built-ins/BigInt/constructor-integer.js