split out tests to see if that makes Travis any happier
split out tests to see if that makes Travis any happier

yuyichao/OpenCL.jl,JuliaPackageMirrors/OpenCL.jl,tkelman/OpenCL.jl,yuyichao/OpenCL.jl,tkelman/OpenCL.jl,JuliaPackageMirrors/OpenCL.jl