The einfo() message speaks about pidof being moved to sys-apps/procps but the package is sys-process/procps.
+ 22 Apr 2014; Lars Wendler <polynomial-c@gentoo.org> sysvinit-2.88-r6.ebuild, + sysvinit-2.88-r7.ebuild: + Fixed elog message to print correct category for procps. Thanks to Martin + Mokrejš for reporting this in bug #508406. +