X87: Vector ICs: Introduce Store and KeyedStore IC code stubs.

X87: Vector ICs: Introduce Store and KeyedStore IC code stubs.

port a86384f192f88458bb46eece0a8f2709979057b8 (r28597).

original commit message:

    Also introduce new interface descriptors for the trampoline and full
    versions of those stubs.

    Currently, the stubs aren't functional.

BUG=

Committed: https://crrev.com/47448c9b19c6c64eda9c6f8f9b4bab5d4a61beee
Cr-Commit-Position: refs/heads/master@{#28605}

[chunyang.dai, 2015-05-25 10:09:29]

chunyang.dai@intel.com changed reviewers:
+ weiliang.lin@intel.com

[chunyang.dai, 2015-05-25 10:09:30]

PTAL

[Weiliang, 2015-05-25 12:51:21]

The CQ bit was checked by weiliang.lin@intel.com

[Weiliang, 2015-05-25 12:51:21]

lgtm

[commit-bot: I haz the power, 2015-05-25 12:51:31]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1148963003/1

[commit-bot: I haz the power, 2015-05-25 13:13:39]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-05-25 13:13:58]

Patchset 1 (id:??) landed as
https://crrev.com/47448c9b19c6c64eda9c6f8f9b4bab5d4a61beee
Cr-Commit-Position: refs/heads/master@{#28605}