So as a safety measure, I've defaulted the target to 1.1 by default (which is the default setting for JDK 1.1, 1.2 and 1.3 anyway).
You can still overload this value on a project by project basis - this just prevents this possible bug hitting Maven users.
git-svn-id: https://svn.apache.org/repos/asf/maven/maven-1/plugins/trunk@113388 13f79535-47bb-0310-9956-ffa450edef68