As some parts of the Wannier code rely on JPHs modified Wannier90 libraries
wannier4.a and wannier5.a I now differentiate between them and the official
version. wannier4.a and wannier5.a are only needed for certain code parts.

Note: The test does not yet search for such a library.

It looks like we are reaching testing/debugging phase.

Note: There is still some additional work required in fleur.F and maybe also
in other files.

In this commit there mainly are some adaptions to the new eigenvector I/O.

...and also completely re-layouted that file.

@Daniel: You will probably hate me for this. Sorry! ;)

It can now be specified according to the following example:

&atom element="Na" id=11.1 name="mySodium" /

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.