Started writting vtk dump file restoration

Samo Penic

2014-11-12 ee84bde159fa91d6f1907cf3d8c39cfe50638444

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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.