d3q Code

doc

Fixes equired for new functional modules, the fixing method is brutal and stupid performance-wise in a couple of places, but it really doesn ot matter because it is a minimal part of this code

More cleanup

Little clean ups

Fix for code not working in parallel any more

Code taken up to level with libxc vectorization, this part is a bit tricky I hope everything works ok (the examples do)

Minor changes, code still need polishing

Phonon dos subroutines moved here

I'm not sure this code work, putting it here so it does not get lost

An mpi barrier woould cause the code to stop if print_percent_wall is called inside a loop when the number of q-points is not a multiple of the number of CPUs