added michael hopkin's problematic event model that produces different output
for compiled events
bug reported by Geraldine Celliere
fixed bug in CvodeData_initialize when infinite integration is used, reported by Geraldine Celliere
install notes for mac, missing sundials extensions
updating rules on which ODEs depend for checking steady state; bug detected by Fiona Achcar
catching NULL in function replacement, which appears in MODEL1303260018.xml
adding an ugly fix for model for a bug in model MODEL1303260018