Bug#758675: metis: GKlib/random.c is missing license grant

[Jonathan Nieder]

Source: metis
Version: 5.1.0.dfsg-3
Severity: serious
Justification: undistributable
Tags: upstream

Hi Anton et al,

The copyright file of metis says the following is the license for
GKlib/random.c:

	Copyright 2004, Makoto Matsumoto and Takuji Nishimura

	THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT OWNER 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.

That's a warranty disclaimer --- it doesn't say anything about how
people can use, modify, or distribute this software.

For comparison, http://www.math.sci.hiroshima-u.ac.jp/~m-mat/MT/VERSIONS/C-LANG/mt19937-64.c
has the same code (for the Mersenne-Twister part) and says

	Copyright (C) 2004, Makoto Matsumoto and Takuji Nishimura,
	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. The names of its contributors may not be used to endorse or promote 
	     products derived from this software without specific prior written 
	     permission.

	THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT OWNER 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.

Could GKlib/random.c and debian/copyright use that license?  Or
alternatively, could metis use another copy of mersenne twister, e.g.
from libgmp if it has one?

Thanks,
Jonathan