Added a Maven pom
Replaced net.infonode.util.collection.EmptyIterator with java.util.Collections.emptyIterator()
Replaced net.infonode.util.collection.CopyOnWriteArrayList with the equivalent class in the JDK
Enabled the antialiasing on the title of the tab windows
Reduced the size of the PNG files
Replaced old style enums with Java 5 enums
Removed the ReadWritable interface