WIP: Event generic

This branch replaces the former, rather slow isCurrentEventActive query by a faster implementation based on large integer division using base 1200.

src/int_div.c

@@ -101,7 +101,7 @@ int smaller(const t_number r, const t_number dq, const int k, const int m) {
 #if DEBUG
   if ((k < 0) || (k+m < k) || (k+m>W_DIGITS))  return Fail;
 #endif
-  while ((r[i+k] == dq[i]) && (i>=0))  i--;
+  while ((r[i+k] == dq[i]) && (i>0))  i--;
   return r[i+k] < dq[i];
 }