RFC: Create a COPYING_v2 file and update files in ginclude to refer to it

[Nick Clifton <nickc at redhat dot com>]

Hi Guys,

  This is the first of the patches to upgrade the gcc mainline sources
  to version 3 of the GPL.  This patch does not actually upgrade any
  sources, instead it does two things:

    1. It creates a new file in the gcc/ directory called COPYING_v2
       which contains a copy of version 2 of the GPL.

    2. It updates the header files in the gcc/ginclude directory to
       refer to the COPYING_v2 file rather than the COPYING file.

  The point of this patch is that the files in the ginclude directory
  contain special exceptions to the GPL and so they are not going to
  be upgraded.  (Well not yet anyway).  But the COPYING file is going
  to be changed over shortly to the GPLv3, hence it is necessary to
  make sure that any files released under GPLv2 do not refer to it.
  
  But before I checked in the patch I wanted everyone to have a chance
  to see what is going on and make any comments.

Cheers
  Nick

gcc/ChangeLog
2007-07-13  Nick Clifton  <nickc@redhat.com>

	* COPYING_v2: New file: Contains a copy of version 2 of the GNU
	General  Public License.
	* ginclude/stddef.h: Refer to COPYING_v2 in the copyright header.
	* ginclude/iso646.h: Likewise.
	* ginclude/stdarg.h: Likewise.
	* ginclude/tgmath.h: Likewise.
	* ginclude/float.h: Likewise.
	* ginclude/stdbool.h: Likewise.

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