See COPYING file in tarball. (This applies to all ebuilds, i.e. 0.9* and 3* .)
+ 09 Dec 2012; Rick Farina <zerochaos@gentoo.org> iw-0.9.17.ebuild, + iw-0.9.22.ebuild, iw-3.2.ebuild, iw-3.3.ebuild, iw-3.4.ebuild, iw-3.5.ebuild, + iw-3.6.ebuild, iw-3.7.ebuild: + fixing license per bug #446504