enabled writing HSX with two different H

enabled writing HSX with two different H

This can be necessary for more exoteric Hamiltonian objects where it still makes sense to retain the information in a single file. Remark that the sparsity patterns of the two objects needs to be the same, there is no check for this.

Signed-off-by: Nick Papior nickpapior@gmail.com

Why is it needed

This is mainly intended for usage in the BdG code as will be requested to be merged into Siesta at a later stage.

There it would make sense to retain the full H + delta matrices in a single file (for completeness sake).

@nils.wittemeier please see here