Added some results for the new Map/Set tests.

 * Added IETP results for the 2 new map tests, and fixed old Firefox/Chrome results.

 * Reordered the Map/Set tests so that tests involving the constructor occur before tests involving set()/add(), which then come before specific method tests.

 * Fixed something in the Proxy "setPrototypeOf" test which, while not clear whether it's spec-compliant, was causing some results to be unhelpful.
Fixed two Reflect results for IE Technical Preview.
Fixed a bug in the Reflect.construct test and results.
Added "WeakMap#set/WeakSet#add returns this" tests.

These are very similar to the Map#add and Map#set tests.
Added extra iterator-consumer tests.

Now, for-of, spread and destructuring have tests that check their functionality on strings, arrays and generic iterators alike.
Merge pull request #320 from webbedspace/generic-iterators

Added extra iterator consumer tests
Merge pull request #317 from webbedspace/mapfixes

Added some results for the new Map/Set tests
Some small corrections

 * Fixed an unsightly typo on the "WeakSet#add returns this" test.
 * Fixed a few results for Node Harmony and Chrome.
Merge pull request #321 from webbedspace/shameful-fixes

Some small corrections
Rework header
Fixed some WebKit Map/Set test results.
Merge pull request #325 from webbedspace/webkit

Fixed some WebKit Map/Set test results.
Try to update damn flattr buttons again
And another flattr fix
Fix flattr once and for all
Remove index.html, update compilers’ results
Added an "instances of iterables" subtest to for-of.
Added extra yield * tests.

Also:
 * Extended the 'instances of iterables' tests to the other iterator-consuming syntaxes.
 * Abstracted the test code for creating a generic iterable into a __createIterableObject function, which is included in all ES6 skeleton files and the Node test script. This is something of a readability trade-off: sacrificing transparency for clarity and brevity.
Updated yield * results for various browsers.

Also:
 * Fixed a bug which caused the for-loop strict tests to crash in Chrome 38.
 * Fixed some mistakes in the Set results for Firefox.
Merge pull request #326 from webbedspace/iterable-instances

Added iteration tests for instances of iterables