Bug 187213 Provid a writer to serialize design in document without any white space.
Add a new writer for serialize design in document without any withe space.
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/writer/ModuleWriter.java
if ( virtualElement instanceof ExtendedItem
						&& IExtendedItemModel.EXTENSION_NAME_PROP
								.equalsIgnoreCase( propDefn.getName( ) ) )
					continue;
				boolean cdata = false;
				if ( propDefn.getTypeCode( ) == IPropertyType.SCRIPT_TYPE
						|| propDefn.getTypeCode( ) == IPropertyType.XML_TYPE )
					cdata = true;
				if ( propDefn.getTypeCode( ) == IPropertyType.STRUCT_TYPE )
				{
					if ( propDefn.isList( ) )
						writeStructureList( virtualElement, propDefn.getName( ) );
					else
						writeStructure( virtualElement, propDefn.getName( ) );
				}
				else if ( propDefn.getTypeCode( ) == IPropertyType.LIST_TYPE )
					writeSimplePropertyList( virtualElement, propDefn.getName( ) );
				else
					writeProperty( virtualElement, ModelUtil
							.getTagByPropertyType( propDefn ), propDefn
							.getName( ), cdata );
			}
			writer.endElement( );  end ��ref-entry��
		}
		writer.endElement( );  end ��Overridden-values��
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.report.model.elements.ElementVisitor#visitJointDataSet(org.eclipse.birt.report.model.elements.JointDataSet)