MIPS: Make sure transitioned arrays efficiently call builtin Array functions

MIPS: Make sure transitioned arrays efficiently call builtin Array functions

Port r10356 (69da81).

Original commit message:
Loosen the requirement for Map equivalency on several map checks, including checks up the prototype chain, that are not sensitive to ElementsKinds. These selected map checks should also match against FAST_DOUBLE_ELEMENT and FAST_ELEMENT transitions of the original map. This specifically helps all variants of transitioned JSArrays to still efficiently call builtins like push, pop and sort.

BUG=
TEST=

Committed: https://code.google.com/p/v8/source/detail?r=10461

[kalmard, 2012-01-19 12:31:16]

Successful testing of v8 on MIPS requires the following patches to be landed as
well:

http://codereview.chromium.org/9192011/
http://codereview.chromium.org/9150025/
http://codereview.chromium.org/9254025/
http://codereview.chromium.org/9195009/
http://codereview.chromium.org/9150026/
http://codereview.chromium.org/9159008/

[danno, 2012-01-19 13:57:11]

lgtm

LGTM, landing