Updated three more copyright years.


git-svn-id: http://seriss.com/public/fltk/fltk/branches/branch-1.3@10355 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
Another version number update.


git-svn-id: http://seriss.com/public/fltk/fltk/branches/branch-1.3@10356 ea41ed52-d2ee-0310-a9c1-e6b18d33e121