RFR: JDK-8176553 LdapContext follows referrals infinitely ignoring set limit

[vyom tewari]

Hi,

Please review the below  code change.
Webrev : http://cr.openjdk.java.net/~vtewari/8176553/webrev0.0/index.html

bugid    : https://bugs.openjdk.java.net/browse/JDK-8176553

Our  all internal tests are clean, this patch is contributed by Jan 
Kalina(Redhat).

Thanks,

Vyom