Text describing the purpose of this directory from Frank Hecker <hecker@mozilla.org>

other-licenses/README

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+The subdirectories of the other-licenses directory contain Mozilla-related 
+source code that is _not_ licensed under the traditional Mozilla licensing 
+schemes (i.e., the Mozilla Public License, Netscape Public License, MPL/GPL 
+or NPL/GPL dual licenses, or the MPL/GPL/LGPL or NPL/GPL/LGPL tri-licenses). 
+In particular, the requirements imposed by the license terms for the source 
+code in the other-licenses directory may be different from the requirements 
+imposed by the terms of the MPL or NPL.
+
+For example, when distributing some or all of this source code (or binary 
+executable products based on it) you may be required to provide additional 
+notices to those to whom you distribute the source code or executables, 
+above and beyond those notices required by the MPL or NPL for other Mozilla 
+code. The licenses for some or all of this source code may also impose 
+additional restrictions on the uses that you or others may make of the code, 
+restrictions not imposed by the MPL or NPL.
+
+For complete information on the terms on which you can use this source code, 
+and the requirements placed upon you and people to whom you distribute the 
+source code or executables incorporating it, please read the information 
+files (e.g,, README, LICENSE, and/or COPYING) in the individual sub-
+directories of the other-licenses directory. If you have any further 
+questions after reading this information, please contact staff@mozilla.org.