Revert some movq->movp changes under the _WIN64 macro for X64

Revert some movq->movp changes under the _WIN64 macro for X64

R=verwaest@chromium.org

Committed: https://code.google.com/p/v8/source/detail?r=18803

[haitao.feng, 2014-01-21 03:42:28]

Hi Toon,

This is a follow-up of https://codereview.chromium.org/137443004 and
https://codereview.chromium.org/105503006. 

I examined the movp usage under _WIN64 macro and found them should be movq. 
Windows does not support x32 ABI, so I tried my best to make them consistent 
with Linux x32. Sorry they are not included in the
https://codereview.chromium.org/137443004 and
https://codereview.chromium.org/105503006.

Thanks
-Haitao

[Toon Verwaest, 2014-01-23 09:44:07]

lgtm

[haitao.feng, 2014-01-24 01:59:14]

Committed patchset #1 manually as r18803 (presubmit successful).