Tag all prototypes as proto, except those set using __proto__

Tag all prototypes as proto, except those set using __proto__

BUG=
R=ishell@chromium.org, yangguo@chromium.org

Committed: https://code.google.com/p/v8/source/detail?r=23042

[Toon Verwaest, 2014-08-08 14:06:07]

PTAL

[Igor Sheludko, 2014-08-11 07:42:14]

lgtm with a nit:

https://codereview.chromium.org/450303003/diff/20001/src/objects.cc
File src/objects.cc (right):

https://codereview.chromium.org/450303003/diff/20001/src/objects.cc#newcode12188
src/objects.cc:12188: }
The "make-prototype-super-fast" piece of code looks like a copy of a part of
JSFunction::SetInitialMap(). Please try to merge them.

[Toon Verwaest, 2014-08-11 12:13:32]

Addressed comments, which required some intrusive changes. PTAL again.

[Toon Verwaest, 2014-08-11 13:50:29]

Yang, PTAL at patch-set 1 and 2 that address Igors comments.

[Yang, 2014-08-11 13:56:12]

lgtm.

[Toon Verwaest, 2014-08-11 14:01:14]

Committed patchset #3 manually as 23042 (presubmit successful).