AUTHORS.txt and LICENSE.txt are not included in the download from PyPy. The license file no longer being there (yes, it moved, no it isn't in the tarball at all) especially makes it a pain for distro package maintainers as we need to include this file in any built package.
Also, tons of Mac OS X garbage in the form of ._ prefixed files are included.
Added authors and license files to manifest template. Closes issue #230.