replace andpd and pand in Math.abs

BUG=
R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/44153002

Patch from Weiliang Lin <weiliang.lin@intel.com>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17413 ce2b1a6d-e550-0410-aec6-3dcde31c8c00