Note: The Wannier code is not yet connected to the main code

It is needed for the Wannier code.

This is needed for the Wannier code and for GW.

...I now reached linker error phase.

The problem was that some arrays had predefined sizes that were
not adapted to the actual problem. I changed this for some arrays
now but there are still some other arrays that may become a problem
at some point, too.

This broadcast was missing for the use of this variable in vgen/vmtxcg.F90, line 292

This might have caused an error in mpi parallel mode.

This might have produced real bugs in mpi parallel mode.

At the moment this does not seem to be important as the final result
of vgen seems to be originating from irank 0 only. However, valgrind
complained that some jump in vgen->vmts->ingr (line 191) is undefined
because an initialization is missing for all iranks != 0.

This is activated by using the inpgen command line switch "-electronConfig"