implement optimized ploadu for MSVC10: this also fix bad code generation in gebp_kernel :)
implement optimized ploadu for MSVC10: this also fix bad code generation in gebp_kernel :)

pthulhu/eigen,cjntaylor/eigen,pthulhu/eigen,pthulhu/eigen,pthulhu/eigen,cjntaylor/eigen,cjntaylor/eigen,pthulhu/eigen,cjntaylor/eigen