Cherry pick branch 'genexuslabs:broken-age' into beta

Author: tomas-sexenian

common/src/main/java/com/genexus/CommonUtil.java

@@ -1600,6 +1600,10 @@ public static int age(Date fn, Date today)
 	{
 		Date fnDate    = resetTime(fn);
 		Date todayDate = resetTime(today);
+		Date sentinel  = newNullDate();
+		if (fnDate.equals(sentinel) || todayDate.equals(sentinel)) {
+			return 0;
+		}
 
 		int age = 0;
 		int	multiplier = 1;