clone_here could not maintain major order

[nicelhc13]

Matrices could be stored in column or row major. However, clone_here() always copies array in row major order as a default. IMO, it is problematic since users could intentionally declare their arrays in column major order. (For example, cublas always requires column major order (Fortran))

I think clone_here() or copy() should maintain orders as many as they can.