root/pypi: links for signalfd

root/pypi signalfd-1.0.0.tar.gz
root/pypi signalfd-0.4.0.tar.gz
root/pypi signalfd-0.3.0.tar.gz
root/pypi signalfd-0.2.0.tar.gz
root/pypi signalfd-0.1.0.tar.gz