Import vests testsuite

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diff --git a/testsuite/vests/vhdl-93/ashenden/compliant/ch_15_alut.vhd b/testsuite/vests/vhdl-93/ashenden/compliant/ch_15_alut.vhd
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+
+-- Copyright (C) 1996 Morgan Kaufmann Publishers, Inc
+
+-- This file is part of VESTs (Vhdl tESTs).
+
+-- VESTs is free software; you can redistribute it and/or modify it
+-- under the terms of the GNU General Public License as published by the
+-- Free Software Foundation; either version 2 of the License, or (at
+-- your option) any later version. 
+
+-- VESTs 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 General Public License
+-- for more details. 
+
+-- You should have received a copy of the GNU General Public License
+-- along with VESTs; if not, write to the Free Software Foundation,
+-- Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA 
+
+-- ---------------------------------------------------------------------
+--
+-- $Id: ch_15_alut.vhd,v 1.3 2001-11-03 23:19:37 paw Exp $
+-- $Revision: 1.3 $
+--
+-- ---------------------------------------------------------------------
+
+library ieee;
+use ieee.std_logic_1164.all;
+
+package alu_types is
+
+  subtype alu_func is std_logic_vector(3 downto 0);
+
+  constant alu_add :     alu_func := "0000";
+  constant alu_addu :    alu_func := "0001";
+  constant alu_sub :     alu_func := "0010";
+  constant alu_subu :    alu_func := "0011";
+  constant alu_and :     alu_func := "0100";
+  constant alu_or :      alu_func := "0101";
+  constant alu_xor :     alu_func := "0110";
+  constant alu_sll :     alu_func := "1000";
+  constant alu_srl :     alu_func := "1001";
+  constant alu_sra :     alu_func := "1010";
+  constant alu_pass_s1 : alu_func := "1100";
+  constant alu_pass_s2 : alu_func := "1101";
+
+end package alu_types;