tried to provide a consistent interface to the new wrappers for the scattering solutions; disabled old rllsll

fixed/improved interface to godfrin (invmode=3); also fixed one bug in the godfrin module; added block partitioning utility

Just the rename and two lines in the cmake files.

Changed some input arguments so that the module does not depend on any things specific to KKRhost anymore.

This fixes issue #130 and it was found by Juba Bouaziz

Now:
- <set_cheby_nosoc>= T sets SOCSCL=0 but uses coupled spin channels (e.g. for noncollinear calculations without SOC)
- <decouple_spins_cheby>= T assumes that spin channels can be decoupled (collinear, without SOC)