make the code represent the usual formula more directly.

lorentz now somehow works. scaling is wrong. drude does not work, nor the 2 layers.

bug showed up with more than one layer

call works, but calculation gives rubbish. The selection of the term has changed and needs to be reflected in the input parameters.

lorentz and drude examples are ok.

Pt and MnO on Pt

validated, but not used or tested

tested and works.

This set should check all input options on eelsin with the original program.

more to do

also update to reference program, even if a couple of NAN files show up.

should be a good reference.

First direct version. to be simplified and structured.

still not sure they are all correct.

All is still fine.

remove unneeded stuff.
rename and reladd layers

top is default!
also replace general subroutine files by the one relevant.