Added an unchecked exception that I find useful for marking code that the developer thinks will not cause an exception.

Added JUnit unit tests for this new exception.

source/org/thdl/util/AllTests.java

@@ -0,0 +1,42 @@
+/*
+The contents of this file are subject to the THDL Open Community License
+Version 1.0 (the "License"); you may not use this file except in compliance
+with the License. You may obtain a copy of the License on the THDL web site 
+(http://www.thdl.org/).
+
+Software distributed under the License is distributed on an "AS IS" basis, 
+WITHOUT WARRANTY OF ANY KIND, either express or implied. See the 
+License for the specific terms governing rights and limitations under the 
+License. 
+
+The Initial Developer of this software is the Tibetan and Himalayan Digital
+Library (THDL). Portions created by the THDL are Copyright 2001 THDL.
+All Rights Reserved. 
+
+Contributor(s): ______________________________________.
+*/
+
+package org.thdl.util;
+
+import junit.framework.Test;
+import junit.framework.TestSuite;
+
+/**
+ * @author David Chandler
+ *
+ * Runs all JUnit test cases in this package.
+ */
+public class AllTests {
+
+	public static void main(String[] args) {
+		junit.textui.TestRunner.run(AllTests.class);
+	}
+
+	public static Test suite() {
+		TestSuite suite = new TestSuite("Test for org.thdl.util");
+		//$JUnit-BEGIN$
+		suite.addTest(new TestSuite(ThdlLazyExceptionTest.class));
+		//$JUnit-END$
+		return suite;
+	}
+}