JDK 10 RFR of JDK-8193208: Add additional licensing file for the JDK

[joe darcy]

Hello,

FYI, please review the ADDITIONAL_LICENSE_INFO file (patch below), to 
live alongside the existing license-related files at the top level of 
the JDK repo, which clarifies the licensing of non-GPL components of the 
JDK.

Cheers,

-Joe

--- /dev/null
+++ b/ADDITIONAL_LICENSE_INFO
@@ -0,0 +1,37 @@
+                      ADDITIONAL INFORMATION ABOUT LICENSING
+
+Certain files distributed by Oracle America, Inc. and/or its affiliates 
are
+subject to the following clarification and special exception to the GPLv2,
+based on the GNU Project exception for its Classpath libraries, known 
as the
+GNU Classpath Exception.
+
+Note that Oracle includes multiple, independent programs in this software
+package.  Some of those programs are provided under licenses deemed
+incompatible with the GPLv2 by the Free Software Foundation and others.
+For example, the package includes programs licensed under the Apache
+License, Version 2.0 and may include FreeType. Such programs are licensed
+to you under their original licenses.
+
+Oracle facilitates your further distribution of this package by adding the
+Classpath Exception to the necessary parts of its GPLv2 code, which 
permits
+you to use that code in combination with other independent modules not
+licensed under the GPLv2. However, note that this would not permit you to
+commingle code under an incompatible license with Oracle's GPLv2 licensed
+code by, for example, cutting and pasting such code into a file also
+containing Oracle's GPLv2 licensed code and then distributing the result.
+
+Additionally, if you were to remove the Classpath Exception from any of 
the
+files to which it applies and distribute the result, you would likely be
+required to license some or all of the other code in that distribution 
under
+the GPLv2 as well, and since the GPLv2 is incompatible with the license 
terms
+of some items included in the distribution by Oracle, removing the 
Classpath
+Exception could therefore effectively compromise your ability to further
+distribute the package.
+
+Failing to distribute notices associated with some files may also create
+unexpected legal consequences.
+
+Proceed with caution and we recommend that you obtain the advice of a 
lawyer
+skilled in open source matters before removing the Classpath Exception or
+making modifications to this package which may subsequently be 
redistributed
+and/or involve the use of third party software.