Added ViennaCL, VexCL and Boost.Compute
Added ViennaCL, VexCL and Boost.Compute

HongjianLi/istar,HongjianLi/istar,HongjianLi/istar,quinonez/istar,quinonez/istar,HongjianLi/istar,quinonez/istar,quinonez/istar