fromSet.setOnCalendar(fromCalendar);
CalendarFieldsSet diffSet = new CalendarFieldsSet();
diffSet.clear();
// Is the calendar sane at the first?
if (!fromSet.matches(fromCalendar, diffSet)) {
String diffs = diffSet.diffFrom(fromSet);
errln((String)"FAIL: "+thisString
+", SOURCE calendar was not set: Differences: "+ diffs);