as-is has been removed from the free license groups so maybe java-virtuals/servlet-api should be changed to somthing in the FREE group for people only using ACCEPT_LICENSE="-* @FREE" the LICENSE file contains exactly the text of the ISC license (except for the copyright notice).
sorry the first paragraph was a copy and paste error the rest is correct
+ 03 Nov 2012; Tony Vroon <chainsaw@gentoo.org> wireless-regdb-20090115.ebuild, + wireless-regdb-20110428-r1.ebuild: + This is ISC-licensed code, which I should have known as I had to sign off on + them... rightfully pointed out by Ben Sagal in bug #437168.