dev-java/commons-compress-1.9 was released on 2014-10-10. http://mail-archives.apache.org/mod_mbox/commons-dev/201410.mbox/%3C87a953ew8a.fsf%40v35516.1blu.de%3E
Created attachment 398344 [details, diff] commons-compress-1.9.ebuild.patch
Please update to 1.11, we need this new version for sci-biology/igv-2.3.80::science.
Original bug was fixed. Bug #591696 is about new version bump.