declaring GPL license

G'day Marc,

On Thu, 14 Oct 2010 10:46:39 -0500

If you want (and you should), create and include a file called
"COPYING" in the 'inst' folder in the package, so that it gets copied
to the main package directory upon installation. [...]

But that would be against the wishes of R core, from the "Writing R
Extension" manual:

	Whereas you should feel free to include a license file in your
	source distribution, please do not arrange to @emph{install} yet
	another copy of the @acronym{GNU} @file{COPYING} or
	@file{COPYING.LIB} files but refer to the copies on
	@url{http://www.r-project.org/Licenses/} and included in the
	@R{} distribution (in directory @file{share/licenses}).

:)

Cheers,

	Berwin