Starting with restore. Not working yet. Changes in main for debugging only

Samo Penic

2016-02-16 8c1bb171977954d573a50d03308c9221d4c0ee8e

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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.