Commit 808db2cfe02cd63deb0eb563b8778faa9b006e7a (https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=808db2cfe02cd63deb0eb563b8778faa9b006e7a) introduced typo: RDEPEND="${OMMON_DEPEND} (Previous ebuilds had CDEPEND variable instead of COMMON_DEPEND.)
Right, fixed.
https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=9ce4f2bd2510ff32ed4e2f88cd980fadbb8a4d28