How to recover the independence of `module_orbital` after moving in some parallel-code?

[maki49]

The independence of module_orbital is destroyed after I tore down GlobalC::ParaO and moved some of its functions ( parallel-division of LCAO-basis ) into class ORB_control ( see PR #735 to TDDFT branch ).

Now I want to recover its independence after my refactor. I would to do following steps:

• move all members of class ORB_control into module_orbitals/ORB_control.cpp
• move src_parallel/parallel_orbitals.h, .cpp into module_orbitals/
• move src_pdiag/pdiag_common.h, .cpp, src_parallel/parallel_common.h, .cpp into module_base or module_orbital
  • these two classes define MPI-interface and a struct LocalMatrix used in hpseps, so maybe moving them into module_base is better ?
• finally, change all used GlobalC and GlobalV (such as ucell, ofs_running) in member functions of ORB_control into parameters.