Merged r13260, r13266, r13268, r13270, r13274 into 3.15 branch.

Refactoring only: Use CheckSSE2OperandIsInt32 instead of copy-n-paste code.

Added (dis-)assembler support for movmskps on ia32 and x64.

Fixed x64 disassembler for cmpb_al

Fixed FloatingPointHelper::CheckSSE2OperandIsInt32.

Fix typo in the CheckSSE2OperandIsInt32: use bitwise not instead of integer negation.

BUG=v8:2458

R=yangguo@chromium.org

Review URL: https://codereview.chromium.org/11748013

git-svn-id: https://v8.googlecode.com/svn/branches/3.15@13295 ce2b1a6d-e550-0410-aec6-3dcde31c8c00