Uhh, I didn't describe that right. Building icedtea-web 1.2.3 with c74251bbaffd against IcedTea 1.12 and running the resulting icedtea-7-plugin doesn't work. Building icedtea-web 1.3 against IcedTea 2.3 allows both icedtea-7-plugin and icedtea-6-plugin to work.
Uhh, I didn't describe that right. Building icedtea-web 1.2.3 with c74251bbaffd against IcedTea 1.12 and running the resulting icedtea-7-plugin doesn't work. Building icedtea-web 1.3 against IcedTea 2.3 allows both icedtea-7-plugin and icedtea-6-plugin to work.