Update copyright year to 2016
Update copyright year to 2015
Update copyright year to 2014
Update copyright notices for 2013
Add 2012 to FSF copyright years for Emacs files.
json.el fallback support for gnus-sync.el in XEmacs and Emacs 22.x. * gnus-sync.el: Load json.el from the gnus-fallback-lib if it's not available otherwise. * gnus-fallback-lib/json.el: Add for XEmacs and Emacs 22 support.