X87: Refactoring InterfaceDescriptors away from code-stubs.h

X87: Refactoring InterfaceDescriptors away from code-stubs.h

port r23515.

original commit message:
  Refactoring InterfaceDescriptors away from code-stubs.h

  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=

[chunyang.dai, 2014-09-01 02:03:25]

chunyang.dai@intel.com changed reviewers:
+ mvstanton@chromium.org, weiliang.lin@intel.com

[chunyang.dai, 2014-09-01 02:03:46]

weiliang.
PTAL.
thanks

[mvstanton, 2014-09-01 09:27:39]

lgtm

[Weiliang, 2014-09-01 14:00:58]

On 2014/09/01 09:27:39, mvstanton wrote:
> lgtm

[Weiliang, 2014-09-01 14:01:19]

Committed as r23568