add license text

debian/copyright

@@ -11,3 +11,29 @@ License: GPL-3+
 Files: StatFS.hsc
 Copyright: Jose A Ortega Ruiz <jao@gnu.org>
 License: BSD-3-clause
+ -- All rights reserved.
+ -- 
+ -- Redistribution and use in source and binary forms, with or without
+ -- modification, are permitted provided that the following conditions
+ -- are met:
+ -- 
+ -- 1. Redistributions of source code must retain the above copyright
+ --    notice, this list of conditions and the following disclaimer.
+ -- 2. Redistributions in binary form must reproduce the above copyright
+ --    notice, this list of conditions and the following disclaimer in the
+ --    documentation and/or other materials provided with the distribution.
+ -- 3. Neither the name of the author nor the names of his contributors
+ --    may be used to endorse or promote products derived from this software
+ --    without specific prior written permission.
+ -- 
+ -- THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ -- ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ -- IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ -- ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
+ -- FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ -- DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ -- OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ -- HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ -- LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ -- OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ -- SUCH DAMAGE.