Fixed handling of inline functions with newr versions of gcc. Added -fgnu89...

Samo Penic

2016-05-06 7a11a7a2a7d6b2b4b7ad285a1a7cddab44040a46

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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.