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.ui/src/org/eclipse/birt/report/designer/internal/ui/dnd/InsertInLayoutUtil.java
int insertColumn = tableAdapter.getColumnCount( );
					try
					{
						tableAdapter.insertColumns( columnDiff, insertColumn );
					}
					catch ( SemanticException e )
					{
						ExceptionHandler.handle( e );
						return null;
					}
				}
				for ( int i = 0; i < positions.length; i++ )
				{
					positions[i] = tableAdapter.getCell( currentRow,
							currentColumn++ );
				}
				focusIndex = 0;
			}
			else
			{
				for ( int i = 0; i < positions.length; i++ )
				{
					positions[i] = target;
				}
				focusIndex = items.length - 1;
			}
			return positions;
		}
		protected TableHandle getTableHandle( CellHandle firstCell )
		{