8081347: Add @modules to jdk_core tests
Reviewed-by: alanb, joehw, lancea
Contributed-by: alexander.kulyakhtin@oracle.com, alan.bateman@oracle.com, mandy.chung@oracle.com

8029235: Update copyright year to match last edit in jdk8 jdk repository for 2013
Summary: updated files with 2011, 2012 and 2013 years according to the file's last updated date
Reviewed-by: tbell, lancea, chegar

8011124: Make KerberosTime immutable
Reviewed-by: xuelei

6982137: Rebranding pass 2 - missed copyright changes
Reviewed-by: mbykov

6882687: KerberosTime too imprecise
Reviewed-by: valeriep