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

Reviewed-by: vinnie, mullan

Reviewed-by: alanb, chegar, mullan

8023338: Update jarsigner to encourage timestamping
Reviewed-by: mullan, ahgross

Reviewed-by: mullan

Reviewed-by: darcy, weijun

Reviewed-by: xuelei, mullan