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

8027696: Incorrect copyright header in the tests
Reviewed-by: alanb, malenkov, mullan

6977726: JColorChooser.getPreviewPanel() returnes null starting from jdk7 b105.
Reviewed-by: alexp