Disable Java 8 'doclint' checks

[ankon]

This allows building out-of-the-box with a Java 8 SDK.

[nfalco79]

The follow is sufficient

<profiles>
    <profile>
        <id>disable-java8-doclint</id>
        <activation>
            <jdk>[1.8,)</jdk>
        </activation>
        <properties>
            <additionalparam>-Xdoclint:none</additionalparam>
        </properties>
    </profile>
</profiles>