Merge pull request #365 from bocoup/codePointAt

test/built-ins/String/prototype/codePointAt/codePointAt.js

test/built-ins/String/prototype/codePointAt/length.js

test/built-ins/String/prototype/codePointAt/name.js

...e/codePointAt/return-abrupt-from-object-pos-to-integer.js

...e/codePointAt/return-abrupt-from-symbol-pos-to-integer.js

...rototype/codePointAt/return-abrupt-from-this-as-symbol.js

...s/String/prototype/codePointAt/return-abrupt-from-this.js

...rototype/codePointAt/return-code-unit-coerced-position.js

...ns/String/prototype/codePointAt/return-first-code-unit.js

...s/String/prototype/codePointAt/return-single-code-unit.js

...t-ins/String/prototype/codePointAt/return-utf16-decode.js

.../returns-undefined-on-position-equal-or-more-than-size.js

...dePointAt/returns-undefined-on-position-less-than-zero.js

...t-ins/String/prototype/codePointAt/this-is-null-throws.js

.../String/prototype/codePointAt/this-is-undefined-throws.js