Bug 119331 Library - name space terminology and behavior
During BIRT 2.0 library feature review meeting the following change was decided. - Change the term namespace to 'prefix' - By default use the library name as the prefix ( namespace ); the dialog to input prefix should be prompted only if hte auto generated prefix is not unique.
UI/org.eclipse.birt.report.designer.core/src/org/eclipse/birt/report/designer/core/commands/CreateCommand.java
{
					int pos = DEUtil.findInsertPosition( (DesignElementHandle) parent,
							(DesignElementHandle) after );
					int slotID = DEUtil.findSlotID( parent, after );
					( (DesignElementHandle) parent ).addElement( newObject,
							slotID,
							pos );
				}
				else
				{
					( (DesignElementHandle) parent ).addElement( newObject,
							DEUtil.getDefaultSlotID( parent ) );
				}
			}
			if ( DesignerConstants.TRACING_COMMANDS )
			{
				System.out.println( "CreateCommand >> Finished. " 
						+ DEUtil.getDisplayLabel( newObject )
						+ " created" ); 
			}
		}
		catch ( SemanticException e )
		{
			if ( DesignerConstants.TRACING_COMMANDS )
			{
				System.out.println( "CreateCommand >> Failed" ); 
			}
			e.printStackTrace( );
		}
	}