Factories to accept parameter 'order'

[ClaudiaComito]

Related
Issue #372. The user should be able to specify whether the memory layout of a tensor should be row-major (C) or column-major (Fortran).

Feature functionality
Same as in numpy, factories should accept a parameter order = 'C' (default, row-major layout) or order = 'F' (column-major layout).

Additional context
Internal memory layout of an ndarray

Beware of misleading terminology when ndim>2:

• row-major puts ndim[0] in contiguous order, column-major puts ndim[-1] in contiguous order. When ndim=2, ndim[0] = rows, ndim[-1] = columns.

Cf. Memory layout of multi-dimensional arrays