reverting some less wise changes and adding license text to main.

src/main.adb

@@ -1,3 +1,18 @@
+--  Copyright (C) 2015  Daniel Otte <bg@nerilex.org>
+--
+--  This program 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 3 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 General Public License for more details.
+--
+--  You should have received a copy of the GNU General Public License
+--  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
 with Ada.Text_IO; use Ada.Text_IO;
 with Crypto_Core_Types; use Crypto_Core_Types;
 with Crypto_Types; use Crypto_Types;

src/sponge/spritz/spritz.adb

@@ -110,14 +110,14 @@ package body Spritz is
       AbsorbNibble(ctx, Shift_Right(x, 4));
    end Absorb;
 
-   procedure Absorb (ctx : in out Context; x : access constant u8_Array) is
+   procedure Absorb (ctx : in out Context; x : in u8_Array) is
    begin
       for i in x'Range loop
          Absorb(ctx, x(i));
       end loop;
    end Absorb;
 
-   procedure Absorb (ctx : in out Context; x : access constant String) is
+   procedure Absorb (ctx : in out Context; x : in String) is
    begin
       for i in x'Range loop
          Absorb(ctx, u8(Character'Pos(x(i))));

src/sponge/spritz/spritz.ads

@@ -25,8 +25,8 @@ package Spritz is
    procedure InitializeContext (ctx : out Context);
    procedure AbsorbStop (ctx : in out Context);
    procedure Absorb (ctx : in out Context; x : in u8);
-   procedure Absorb (ctx : in out Context; x : access constant u8_Array);
-   procedure Absorb (ctx : in out Context; x : access constant String);
+   procedure Absorb (ctx : in out Context; x : in u8_Array);
+   procedure Absorb (ctx : in out Context; x : in String);
    procedure Drip (ctx : in out Context; z : out u8);
    procedure Squeeze (ctx : in out Context; P : out u8_Array);