There is a new version of wireless-tools, just rename the ebuild and change this at the begining of it: S=${WORKDIR}/${MY_P/.pre3/} And please note that libiw.a sems to be missing in wireless-tools-27 so the dolib line should not include it. Please have a look at bug #32802.
Added to portage. Please test, still investigating the best method to deal with new lib handling in 27_pre* packages.
Closing this. newer versions are in!