Vector ICs: Allow for more IC kinds.

Vector ICs: Allow for more IC kinds.

We have plans to create more ICs, and we are out of bits to represent the Kind
in the flags field of the code object. The InlineCacheState can lose a bit
because it no longer needs the DEFAULT state. That state existed as a way to
detect errors where code incorrectly looked at a vector IC stub's
InlineCacheState instead of correctly determining said state from a glance at
the vector. This really isn't a danger anymore.

So, with the horse trading, we could now represent up to 32 code kinds.

BUG=

Committed: https://crrev.com/25d48ec37fd3b8a6f22008df0c24530b98ab3e63
Cr-Commit-Position: refs/heads/master@{#31666}

[mvstanton, 2015-10-29 17:06:14]

mvstanton@chromium.org changed reviewers:
+ bmeurer@chromium.org

[mvstanton, 2015-10-29 17:06:15]

Hi Benedikt, this CL should aid our IC plans, both before and after the
Christkindlmarkt time. Thanks for the look!
--Michael

[Benedikt Meurer, 2015-10-29 18:55:24]

lgtm

[mvstanton, 2015-10-29 20:31:06]

The CQ bit was checked by mvstanton@chromium.org

[commit-bot: I haz the power, 2015-10-29 20:31:17]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1427803003/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1427803003/1

[commit-bot: I haz the power, 2015-10-29 20:32:45]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-10-29 20:33:04]

Patchset 1 (id:??) landed as
https://crrev.com/25d48ec37fd3b8a6f22008df0c24530b98ab3e63
Cr-Commit-Position: refs/heads/master@{#31666}