reworked CSR (scalar) SpMV kernel
reworked CSR (scalar) SpMV kernel

sdalton1/cusplibrary,cusplibrary/cusplibrary,cusplibrary/cusplibrary,sdalton1/cusplibrary,cusplibrary/cusplibrary,sdalton1/cusplibrary,cusplibrary/cusplibrary,sdalton1/cusplibrary