You shouldn't specify the full path of the file since the user can specify whether to use gzip or bzip2 to compress the files. Instead refer to where the file can be found. References for why we should do this can be found at: https://bugs.gentoo.org/show_bug.cgi?id=169772 http://devmanual.gentoo.org/ebuild-writing/common-mistakes/
New ebuild at bug #245752 should resolve this issue
There is a new ebuild for snort-2.8.4 at the following bug... bug#266288 This ebuild resolves this issue. Please close this bug.