Fix phis for non-sse2 double values

Since hydrogen will try to merge phi-inputs using registers, even if
the values are spilled, we cannot mark LGoto as double clobbering
instruction.

BUG=
R=verwaest@chromium.org

Review URL: https://codereview.chromium.org/23068038

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@16671 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Refactoring PropertyCallbackInfo & FunctionCallbackInfo, step 1.

The goal is to unify PropertyCallbackInfo and FunctionCallbackInfo so that they
contain the same fields.

The field order will be:
holder
isolate
return value default value
return value
data
this

This step 1 reorders the PropertyCallbackInfo fields.

BUG=
R=dcarney@chromium.org, mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/23620036

Patch from Marja Hölttä <marja@chromium.org>.

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@16673 ce2b1a6d-e550-0410-aec6-3dcde31c8c00