MIPS: Refactoring InterfaceDescriptors away from code-stubs.h - external.

MIPS: Refactoring InterfaceDescriptors away from code-stubs.h - external.

Port r23515 (fe0bdbf)

Original commit message:
Clean up and create seperation between the concept of a call descriptor and a
code stub interface descriptor. The former is just concerned with how to call,
but the latter has many extra hints related to code generation and
deoptimization for the implementation of a particular code stub.

BUG=
R=paul.lind@imgtec.com, vogelheim@chromium.org

Committed: https://code.google.com/p/v8/source/detail?r=23525

[balazs.kilvady, 2014-08-29 15:08:07]

balazs.kilvady@imgtec.com changed reviewers:
+ akos.palfi@imgtec.com, danno@chromium.org, dusan.milosavljevic@imgtec.com,
gergely.kis@imgtec.com, mvstanton@chromium.org, paul.lind@imgtec.com

[balazs.kilvady, 2014-08-29 15:10:57]

PTAL. Could a v8 team member review?

[paul.l..., 2014-08-29 15:16:00]

paul.lind@imgtec.com changed reviewers:
+ vogelheim@chromium.org

[paul.l..., 2014-08-29 15:16:01]

Obviously, this is just the arch-independent parts that need v8 team approval.
The meat of the change is in https://codereview.chromium.org/516263002/, which
we kept separate in case some iteration is needed on our side.

My LGTM doesn't help here.

[vogelheim, 2014-08-29 15:25:37]

lgtm

I'll take it you'll submit this right after the change which introduces the
corresponding sources?

[balazs.kilvady, 2014-08-29 15:28:33]

Committed patchset #1 manually as r23525.

[paul.l..., 2014-08-29 15:34:40]

On 2014/08/29 15:25:37, vogelheim wrote:
> I'll take it you'll submit this right after the change which introduces the
> corresponding sources?

Yes (in fact, the other cl did just land.) The idea is to have a precedent that
build or other arch-independent changes can get approved early for MIPS, while
your team is still in the office. We can then take as long as needed on the
rest, and still get them in same day, for testing & auto-rolls. We will not land
these until associated source changes land, per your request.