Re: gplv3 files and updates

[Karl Berry]

    Yes.  gnulib will also need to update doc/gpl.texi and doc/gpl.txt.
    Similarly for doc/lgpl.texi and doc/lgpl.txt.

I wasn't sure why gpl.txt and lgpl.txt were needed given
COPYING{,.LESSER}, so I removed them.  If for some reason it is useful
to have these copies, fine, we can set them up.

Other than that, I renamed/added the COPYING and .texi files.
lgpl-3.0.texi has not been created yet AFAIK.  I'll try to send a draft
to jgay about that over the weekend, if it hasn't materialized otherwise.

karl