#601: add Nashorn and ASM jars required for Java 15+ scripting

The previous #601 commit wired these libraries into the build and docs but did not add the binaries or their license texts.

Co-authored-by: Cursor <cursoragent@cursor.com>

Author: dbenn

doc/license/asm-bsd-3-clause.txt

@@ -0,0 +1,30 @@
+ASM is released under the following 3-Clause BSD License:
+https://asm.ow2.io/license.html
+
+ASM: a very small and fast Java bytecode manipulation framework
+Copyright (c) 2000-2011 INRIA, France Telecom
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions
+are met:
+1. Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+2. Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+3. Neither the name of the copyright holders nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
+THE POSSIBILITY OF SUCH DAMAGE.

doc/license/gpl-2.0-classpath-exception.txt

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+"CLASSPATH" EXCEPTION TO THE GPL
+
+This is the Classpath exception as published with OpenJDK Nashorn:
+https://github.com/openjdk/nashorn/blob/main/LICENSE
+
+The GPL-2 text itself is in gpl-2.0.txt. Both apply to nashorn-core.
+
+Certain source files distributed by Oracle America and/or its affiliates are
+subject to the following clarification and special exception to the GPL, but
+only where Oracle has expressly included in the particular source file's header
+the words "Oracle designates this particular file as subject to the "Classpath"
+exception as provided by Oracle in the LICENSE file that accompanied this code."
+
+ 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.