root/pypi: links for asv-files

root/pypi asv_files-dev-20121101-01.tar.gz
root/pypi asv_files-dev-20120520-01.tar.gz
root/pypi asv_files-dev-20120501-02.tar.gz
root/pypi asv_files-dev-20120501-01.tar.gz
root/pypi asv_files-dev-20120401-01.tar.gz