replace plexus with maven shared utils (#211)

Author: elharo

src/main/java/org/apache/maven/plugins/javadoc/JavadocUtil.java

@@ -93,11 +93,11 @@
 import org.apache.maven.shared.invoker.Invoker;
 import org.apache.maven.shared.invoker.MavenInvocationException;
 import org.apache.maven.shared.invoker.PrintStreamHandler;
+import org.apache.maven.shared.utils.io.DirectoryScanner;
+import org.apache.maven.shared.utils.io.FileUtils;
 import org.apache.maven.wagon.proxy.ProxyInfo;
 import org.apache.maven.wagon.proxy.ProxyUtils;
 import org.codehaus.plexus.languages.java.version.JavaVersion;
-import org.codehaus.plexus.util.DirectoryScanner;
-import org.codehaus.plexus.util.FileUtils;
 import org.codehaus.plexus.util.cli.CommandLineException;
 import org.codehaus.plexus.util.cli.CommandLineUtils;
 import org.codehaus.plexus.util.cli.Commandline;