Exit with non-zero with exception. Fix dnsjava lib.

It is unclear how we got the version of dnsjava that was checked in.
The same version build from the jdnssec-dnsjava repo was different.
This fixes the "missing CAA" support issue.

src/main/java/com/verisignlabs/dnssec/cl/CLBase.java

@@ -338,6 +338,7 @@ public abstract class CLBase
     catch (Exception e)
     {
       e.printStackTrace();
+      System.exit(1);
     }
   }
 }