Not inherited by any packages in Gentoo repository. Suggest treecleaning.
Eclasses marked and mail sent.
Done + 17 Jul 2015; Brian Evans <grknight@gentoo.org> -php-common-r1.eclass, + -php-ext-base-r1.eclass, -php-ezc.eclass: + Drop old, unused eclasses wrt bug 551910 +