Merge pull request #1701 from leobalter/1697-features

src/class-fields/computed-name-referenceerror.case

src/class-fields/computed-name-toprimitive-err.case

...fields/computed-name-toprimitive-returns-noncallable.case

...s-fields/computed-name-toprimitive-returns-nonobject.case

src/class-fields/computed-name-toprimitive-symbol.case

src/class-fields/computed-name-toprimitive.case

src/class-fields/computed-name-tostring-err.case

src/class-fields/computed-name-valueof-err.case

src/class-fields/computed-names.case

src/class-fields/computed-symbol-names.case

src/class-fields/ctor-called-after-fields-init.case

src/class-fields/init-err-evaluation.case

src/class-fields/init-value-defined-after-class.case

src/class-fields/init-value-incremental.case

...elds/initializer-error/cls-decl-fields-comp-name.template

...itializer-error/cls-decl-fields-static-comp-name.template

...itializer-error/cls-expr-fields-static-comp-name.template

...val-super-property/cls-decl-fields-indirect-eval.template

...eval-super-property/cls-decl-private-fields-eval.template

...r-property/cls-decl-private-fields-indirect-eval.template