dependency:copy goal should accept copyPom and useRepositoryLayout properties

<plugin>
    <groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-dependency-plugin</artifactId>
    <version>2.1</version>
    <configuration>
        </artifactItems>
            <artifactItem>
                <groupId>javax.transaction</groupId>
                <artifactId>jta</artifactId>
                <version>1.0.1B</version>
                <outputDirectory>target/lib/jta</outputDirectory>
            </artifactItem>
        </artifactItems>
        <copyPom>true</copyPom>
        <useRepositoryLayout>true</useRepositoryLayout>
    </configuration>
</plugin>