This reverts commit 8422147c.

* Test for change to cache templates by site, not contents

These tests are against a specification change based on discussion in
https://github.com/tc39/ecma262/issues/840

The tests here passed on SpiderMonkey but failed on other
implementations, which implement the current specification.

* Add a test that caching is by source location, not function identity

* Update existing tests to reference the spec properly

Refactor function literal tests for parsers

A number of tests for the parsing of function literals were expressed
using `eval`. This made the tests more complex than necessary and also
prevented the tests from providing value to ECMAScript parsers.

Remove the use of `eval` in the relevant tests and instead express the
expectations with literal source text.

 - per https://github.com/tc39/ecma262/pull/1083#issuecomment-361775023

This patch fixes a typo (`\FEFF` → `\uFEFF`) and adds some missing whitespace symbols as a follow-up to https://github.com/tc39/test262/pull/1246.

Per:
 - https://github.com/tc39/test262/issues/866#issuecomment-328565337
 - https://github.com/tc39/test262/issues/866#issuecomment-359978873

Closes #866.

A number of tests for the parsing of object initializers were expressed
using `eval`. This made the tests more complex than necessary and also
prevented the tests from providing value to ECMAScript parsers.

Remove the use of `eval` in the relevant tests and instead express the
expectations with literal source text.