It's only a short perl script, but with about 50 lines it's long enough to be copyrightable, so some sort of license is needed.
Ping. Could you try to get a clarification from upstream? Any free software license would be o.k. for us.
Mail sent.
Created attachment 345886 [details] Public domain dedication from Mike Taylor Received attached answer.
+ 18 Apr 2013; Ulrich Müller <ulm@gentoo.org> -deb2targz-1.ebuild, + deb2targz-1-r2.ebuild: + Fix LICENSE: placed in the public domain, see bug 441752. Remove old. +