Add GNU Classpath exception

Author: coconutpalm

Diff for: LICENSE

@@ -1,5 +1,6 @@
                     GNU AFFERO GENERAL PUBLIC LICENSE
-                       Version 3, 19 November 2007
+                     WITH THE CLASSPATH EXCEPTION**
+                      Version 3, 19 November 2007
 
  Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
  Everyone is permitted to copy and distribute verbatim copies
@@ -659,3 +660,25 @@ specific requirements.
 if any, to sign a "copyright disclaimer" for the program, if necessary.
 For more information on this, and how to apply and follow the GNU AGPL, see
 <https://www.gnu.org/licenses/>.
+
+----
+
+
+                       ** CLASSPATH EXCEPTION
+                      Retrieved 7th March, 2022
+            https://www.gnu.org/software/classpath/license.html
+
+Linking this library statically or dynamically with other modules is 
+making a combined work based on this library. Thus, the terms and 
+conditions of the GNU General Public License cover the whole combination.
+
+As a special exception, the copyright holders of this library give you 
+permission to link this library with independent modules to produce an 
+executable, regardless of the license terms of these independent modules, 
+and to copy and distribute the resulting executable under terms of your 
+choice, provided that you also meet, for each linked independent module, 
+the terms and conditions of the license of that module. An independent 
+module is a module which is not derived from or based on this library. 
+If you modify this library, you may extend this exception to your 
+version of the library, but you are not obligated to do so. If you do 
+not wish to do so, delete this exception statement from your version.