Created attachment 343832 [details] licenses/sun-concurrent-util According to the package's homepage: "All classes are released to the public domain and may be used for any purpose whatsoever without permission or acknowledgment. Portions of the CopyOnWriteArrayList and ConcurrentReaderHashMap classes are adapted from Sun JDK source code. These are copyright of Sun Microsystems, Inc, and are used with their kind permission, as described in this license." The Sun license is attached. AFAICS, the right to create derivative works is only granted to Doug Lea, therefore it doesn't qualify as a free software license. It can be added to the BINARY-REDISTRIBUTABLE license group though. In addition, file src/demo/Heat.java carries a MIT (X11) license notice.
Fixed.