fix EIGEN_CPUID for i386 & PIC, still remains to fix the MSVC version
fix EIGEN_CPUID for i386 & PIC, still remains to fix the MSVC version

rotorliu/eigen,rotorliu/eigen,madlib/eigen_backup,mjbshaw/Eigen,mjbshaw/Eigen,madlib/eigen_backup,rotorliu/eigen,mjbshaw/Eigen,madlib/eigen_backup,rotorliu/eigen,mjbshaw/Eigen,madlib/eigen_backup