Added improvements to release script to better support other projects (as this script has been copied to keyring).
Added improvements to release script to better support other projects (as this script has been copied to keyring).

--HG--
branch : distribute
extra : rebase_source : e8ffb18f4415c4146b78a9515fe7539e00445e34

pypa/setuptools,pypa/setuptools,pypa/setuptools