Update GettextResource.java from GNU gettext 0.19.8

Only change is in comment block.
Previous checkin didn't have gettext version, so do this
just so we know what version we are on.

core/java/src/gnu/gettext/GettextResource.java

 /* GNU gettext for Java
- * Copyright (C) 2001, 2007 Free Software Foundation, Inc.
+ * Copyright (C) 2001, 2007, 2015-2016 Free Software Foundation, Inc.
  *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU Library General Public License as published
- * by the Free Software Foundation; either version 2, or (at your option)
- * any later version.
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation; either version 2.1 of the License, or
+ * (at your option) any later version.
  *
  * This program is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Library General Public License for more details.
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
  *
- * You should have received a copy of the GNU Library General Public
- * License along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
- * USA.
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
 package gnu.gettext;

core/java/src/gnu/gettext/package.html

@@ -3,6 +3,7 @@
 <p>
 GettextResource only, for ngettext().
 Called only from net.i2p.util.Translate, which is where everything except ngettext is implemented.
+This is taken unchanged from the GNU gettext package version 0.19.8.
 </p>
 </body>
 </html>