kspace pppm/tip4p with a triclinic unit

Is there any hope that I can use pair_style lj/cut/tip4p/cut and also
pair_style lj/cut/tip4p/long for triclinic cells in the future releases.

There is hope. I found the bug, which affects both triclinic and
orthogonal TIP4P: https://github.com/lammps/lammps/issues/299. I also
have a version of pppm/tip4p that is modified for triclinic but it
still needs to be tested.