See tracker.
+ 30 Jul 2013; Mikle Kolyada <zlogene@gentoo.org> -Cache-Memcached-1.24.ebuild, + -Cache-Memcached-1.26.ebuild, -Cache-Memcached-1.27.ebuild, + -Cache-Memcached-1.28.ebuild, -Cache-Memcached-1.29.ebuild: + drop old wrt bug #478738 +