copyrights for testsuite source files

[Michael Elizabeth Chastain]

Gnu Coding Standards

  http://www.gnu.org/prep/standards_4.html#SEC4

    "This also applies to comments and documentation files.  For
    copyright law, comments and code are just text.  Copyright applies
    to all kinds of text, so we need legal papers for all kinds."

Information For Maintainers of GNU Software

  http://www.gnu.org/prep/maintain_8.html#SEC8

    4.4 Copyright Notices

    "You should maintain a legally valid copyright notice and a license
     notice in each nontrivial file in the package. (Any file more than
     ten lines long is nontrivial for this purpose.) This includes
     header files and interface definitions, makefiles, scripts, other
     data files used in building or running the program, documentation
     files, and any supporting files.  If a file has been explicitly
     placed in the public domain, then instead of a copyright notice, it
     should have a notice saying explicitly that it is in the public
     domain."

That's our policy.

My interpretation is that all those testsuite/gdb.*/*.c files need some
cleaning up.  Another headache.  :-(

Michael C