Merge "Check in a pristine copy of GCC 4.8.1."

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+------------------------------------------------------------------------------
+--                                                                          --
+--                         GNAT COMPILER COMPONENTS                         --
+--                                                                          --
+--                              G N A T C M D                               --
+--                                                                          --
+--                                 S p e c                                  --
+--                                                                          --
+--          Copyright (C) 1996-2008, Free Software Foundation, Inc.         --
+--                                                                          --
+-- GNAT is free software;  you can  redistribute it  and/or modify it under --
+-- terms of the  GNU General Public License as published  by the Free Soft- --
+-- ware  Foundation;  either version 3,  or (at your option) any later ver- --
+-- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
+-- OUT 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  distributed with GNAT; see file COPYING3.  If not, go to --
+-- http://www.gnu.org/licenses for a complete copy of the license.          --
+--                                                                          --
+-- GNAT was originally developed  by the GNAT team at  New York University. --
+-- Extensive contributions were provided by Ada Core Technologies Inc.      --
+--                                                                          --
+------------------------------------------------------------------------------
+
+--  This program provides a simple command interface for using GNAT and its
+--  associated utilities. The format of switches accepted is intended to
+--  be more familiar in style for VMS and DOS users than the standard Unix
+--  style switches that are accepted directly.
+
+--    The program is typically called GNAT when it is installed and
+--    the two possible styles of use are:
+
+--  To call gcc:
+
+--    GNAT filename switches
+
+--  To call the tool gnatxxx
+
+--    GNAT xxx filename switches
+
+--  where xxx is the command name (e.g. MAKE for gnatmake). This command name
+--  can be abbreviated by giving a prefix (e.g. GNAT MAK) as long as it
+--  remains unique.
+
+--  In both cases, filename is in the format appropriate to the operating
+--  system in use. The individual commands give more details. In some cases
+--  a unit name may be given in place of a file name.
+
+--  The switches start with a slash. Switch names can also be abbreviated
+--  where no ambiguity arises. The switches associated with each command
+--  are specified by the tables that can be found in the body.
+
+--  Although by convention we use upper case for command names and switches
+--  in the documentation, all command and switch names are case insensitive
+--  and may be given in upper case or lower case or a mixture.
+
+procedure GNATCmd;