Add in @Overrides across the board, clean up the comments around them some, and remove

unneeded imports.
I've got partially completed patches for narya & vilya, too, but nenya was the 
only one that wound up in a decent state after a friday evening puttering at it,
killing time waiting on other things to finish.


git-svn-id: svn+ssh://src.earth.threerings.net/nenya/trunk@572 ed5b42cb-e716-0410-a449-f6a68f950b19

src/java/com/threerings/tools/CompiledConfigTask.java

@@ -24,8 +24,6 @@ package com.threerings.tools;
 import java.io.File;
 import java.io.Serializable;
 import java.util.ArrayList;
-import java.util.Iterator;
-
 import org.apache.tools.ant.BuildException;
 import org.apache.tools.ant.DirectoryScanner;
 import org.apache.tools.ant.Task;
@@ -67,6 +65,7 @@ public class CompiledConfigTask extends Task
         _filesets.add(set);
     }
 
+    @Override
     public void execute () throws BuildException
     {
         // instantiate and sanity check the parser class