tauola interface breaks WHIZARD

[Juergen Reuter]

TAUOLA interface breaks WHIZARD as PYTHIA fails with the message that block data have not been properly loaded. Changes were to move the tauola_interface part to the main WHIZARD. The only way I see is to move the interface back to the main tauola directory.

[Juergen Reuter]

It would be good to put as much information as possible here to understand whether commit r7541 worked accidentally, or is ok in general, i.e. whether it is ok in general to have the tauola_interface in $(srcdir)/src/tauola or whether we have to put it back to $(srcdir)/tauola.

[Juergen Reuter]

Apparently, the PYTHIA common blocks MUST NOT appear in the header of the tauola_interface module. Putting them explicitly into each subroutine and function of the module where they are used solves the problem with the broken PYTHIA initialization.