Components registry - Component registration

* Incomplete class for component state tracking
* Incomplete components registry class
* Various exceptions for problems that can occur during component
registration

src/main/java/info/ebenoit/ebul/cmp/DuplicateComponentException.java

@@ -0,0 +1,34 @@
+package info.ebenoit.ebul.cmp;
+
+
+public class DuplicateComponentException
+		extends ComponentManagementException
+{
+
+	private static final long serialVersionUID = -9081860105587395537L;
+
+
+	public DuplicateComponentException( )
+	{
+		super( );
+	}
+
+
+	public DuplicateComponentException( String message , Throwable cause )
+	{
+		super( message , cause );
+	}
+
+
+	public DuplicateComponentException( String message )
+	{
+		super( message );
+	}
+
+
+	public DuplicateComponentException( Throwable cause )
+	{
+		super( cause );
+	}
+
+}