Merge pull request #672 from bocoup/spread-coverage

src/spread/default/array.template

src/spread/error/array.template

src/spread/mult-expr.case

src/spread/mult-literal.case

src/spread/sngl-expr.case

src/spread/sngl-literal.case

...uage/expressions/array/spread-err-mult-err-expr-throws.js

...e/expressions/array/spread-err-mult-err-iter-get-value.js

...age/expressions/array/spread-err-mult-err-itr-get-call.js

...uage/expressions/array/spread-err-mult-err-itr-get-get.js

...anguage/expressions/array/spread-err-mult-err-itr-step.js

...nguage/expressions/array/spread-err-mult-err-itr-value.js

...age/expressions/array/spread-err-mult-err-unresolvable.js

...uage/expressions/array/spread-err-sngl-err-expr-throws.js

...age/expressions/array/spread-err-sngl-err-itr-get-call.js

...uage/expressions/array/spread-err-sngl-err-itr-get-get.js

...ge/expressions/array/spread-err-sngl-err-itr-get-value.js

...anguage/expressions/array/spread-err-sngl-err-itr-step.js

...nguage/expressions/array/spread-err-sngl-err-itr-value.js

...age/expressions/array/spread-err-sngl-err-unresolvable.js