Revert "Make Function.length and Function.name configurable properties."

Revert "Make Function.length and Function.name configurable properties."

Plenty of test failures on test262, Mozilla, Webkit. Will have to investigate.

TBR=mstarzinger@chromium.org
BUG=

Committed: https://code.google.com/p/v8/source/detail?r=19203

[rossberg, 2014-02-07 15:29:27]

Committed patchset #1 manually as r19203.

[sof, 2014-02-08 19:27:56]

No shortage of test262 failures, e.g.,

if (delete Date.prototype.toLocaleString.length  !== false) {
  $ERROR(...);
}

which you'll find N variations of across many methods on the prototypes of the
standard objects. Hmm, my bad.

If putting this behind a flag is worth doing, I could do that. Or it could just
wait until ES6 is nigh; it's a small change to make after all.

[rossberg, 2014-02-10 12:38:00]

On 2014/02/08 19:27:56, sof wrote:
> No shortage of test262 failures, e.g.,
> 
> if (delete Date.prototype.toLocaleString.length  !== false) {
>   $ERROR(...);
> }
> 
> which you'll find N variations of across many methods on the prototypes of the
> standard objects. Hmm, my bad.
> 
> If putting this behind a flag is worth doing, I could do that. Or it could
just
> wait until ES6 is nigh; it's a small change to make after all.

I'd be fine with a flag, but not sure it's worth it. You would have to provide
separate harmony test cases. Your call. :)