QA Notice: ECLASS 'gnuconfig' inherited illegally in dev-libs/expat-1.95.7
ignore it, the ebuild is fine
Either the QA Notice is erroneous or the ebuild does not pass QA. Re-assign to portage herd if you are sure the ebuild is fine.
http://sources.gentoo.org/viewcvs.py/gentoo-x86/dev-libs/expat/expat-1.95.7.ebuild?r1=1.25&r2=1.26 Closing.