8147772: Update KerberosTicket to describe behavior if it has been destroyed and fix NullPointerExceptions
8163104: Unexpected NPE still possible on some Kerberos ticket calls
Reviewed-by: weijun

Summary: updated files with 2011, 2012 and 2013 years according to the file's last updated date
Reviewed-by: tbell, lancea, chegar

8006182: cleanup to use java.util.Base64 in java security component, providers, and regression tests
Summary: Refactored code to use java.util.Base64 Mime Encoder and Decoder as a replacement for sun.misc.BASE64Encoder and sun.misc.BASE64Decoder
Reviewed-by: vinnie, chegar, sherman

Reviewed-by: darcy, weijun

6695818: New regression test (KerberosTixDateTest) for Kerberos failing on (probably) all platforms.
Reviewed-by: mullan

Reviewed-by: mullan