license: add LibTomMath

Change-Id: Id0d3f12e6d5bacaba910f88227f2f9aea69817ad

readlicense_oo/license/license.xml

@@ -925,6 +925,10 @@
         glennrp at users.sourceforge.net<br />
         February 3, 2011  </p>
     </div>
+    <div class="FIREBIRD">
+        <h2>LibTomMath</h2>
+        <p>The following software may be included in this product: LibTomMath. LibTomMath is public domain.</p>
+    </div>
     <div class="VISIO">
         <h2>libvisio</h2>
         <p>The following software may be included in this product: libvisio. Use of any of this software is governed by