Added some fixes from Jaroslav Fojtik submitted on sourceforge bug tracker:
3096348 Missing "break" in states.c/canDispatch()
3096359 Crash inside dcf.c/send_consise_dcf()
3101891 Potencial overflow inside getNodeState()

Authors :
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Edouard TISSERANT (www.canfestival.org)
Francis DUPIN (LIVIC)
Laurent BESSARD (www.canfestival.org)