Adding a Java program to merge, sort, normalize, and make unique.

This program operates on all files in a particular directory.  Files are merged into a single canonical list of reserved names.  This can be used on the files in this repository which individually represent domains reserved in each section of spec 5.  The program constructs a single file which represents all the domains to be reserved across a particular gTLD.

The jar file contains the UniqueUnion class file as Main.  In a windows environment, you should be able to double click on the jar file to merge all the .txt files into a single file.