Version splitting for configure.ac

Thanks again to Brandon Inverson for providing this patch. All changes are his
except for the comment in configure.ac and the version.js.tpl move/changes.

Copyright-paperwork-exempt: Yes
copyright script will now --follow files
[copyright] Copyright update after adding --follow to copyright script
ease.js is now GNU ease.js.

On Sun, Dec 22, 2013 at 03:31:08AM -0500, Richard Stallman wrote:
> I hereby dub ease.js a GNU package, and you its maintainer.
>
> Please don't forget to mention prominently in the README file and
> other suitable documentation places that it is a GNU program.
Tests now work properly with auto* and no longer require minified files
AUTHORS, NEWS, and ChangeLog will now always rebuild
Added build directory to EXTRA_DIST

We want these files to be available in the tarball for those who do not have the
setup necessary to build (which is far more likely to be the care with
JavaScript developers).