Added many fixes for reruning the simulations, starting from tapes, added C...

Samo Penic

2016-05-13 3d0247677949505858b0b947fc3b216bb2a7bc80

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Original written by Dan Kroll in FORTRAN. Code was then largely adapted and commented by Miha Fosnaric-Fosni. Rewritten into C by Samo Penic-Peni, with help of Miha's extensive explanations.