LICENSE: dual license, adding GPLv2

This makes us explicitly compatible with GPLv2-only programs.

1 files changed, 13 insertions, 8 deletions

diff --git a/LICENSE b/LICENSE
index ae5ee8f..2d4cd94 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,16 +1,21 @@
-posix_mq is copyrighted Free Software by all contributors, see logs in
+Ruby posix_mq is copyrighted Free Software by all contributors, see logs in
 revision control for names and email addresses of all of them.
 
-You can redistribute it and/or modify it under either the terms of the GNU
+You can redistribute it and/or modify it either under the terms of the GNU
 Lesser General Public License as published by the Free Software Foundation,
 version 3.0 {LGPLv3}[http://www.gnu.org/licenses/lgpl-3.0.txt] (see
-link:COPYING).
+link:COPYING) or version 2 of the GNU General Public License
+{GPLv2}[http://www.gnu.org/licenses/gpl-2.0.txt].
 
-posix_mq 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 Lesser General Public
-License for more details.
+The project leader {Eric Wong}[mailto:normalperson@yhbt.net] reserves
+the right to upgrade the project license to future versions of the LGPL
+(but no other licenses).
+
+Ruby posix_mq 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 Lesser
+General Public License for more details.
 
 You should have received a copy of the GNU Lesser General Public License
-along with the GNU C Library; if not, write to the Free Software
+along with Ruby posix_mq; if not, write to the Free Software
 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301