Bug 182062 Define and provide Date/Time format value
DateTime type has been supported in BIRT. Now, there's a proposal on support Date/Time type in BIRT Report Designer. In order to enable end user setting the format of Date/Time type, please define and provide format value for both Date and Time.
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/writer/ModuleWriter.java
writer.attribute( DesignSchemaConstants.KEY_ATTRIB, key );
		if ( cdata )
			writer.textCDATA( xml );
		else
			writer.text( xml );
		writer.endElement( );
	}
	/**
	 * Writes the structure list, each of which has only one member.
	 * 
	 * @param obj
	 *            the design element
	 * @param propName
	 *            the name of the list property
	 * @param memberName
	 *            the name of the member in structure
	 */
	protected void writeSimpleStructureList( DesignElement obj,
			String propName, String memberName )
	{
		PropertyDefn prop = (ElementPropertyDefn) obj.getDefn( ).getProperty(
				propName );
		assert prop != null;
		assert prop.getTypeCode( ) == IPropertyType.STRUCT_TYPE
				&& prop.isList( );
		List list = (List) obj.getLocalProperty( getModule( ), propName );
		if ( list == null || list.size( ) == 0 )
			return;
		writer.startElement( DesignSchemaConstants.LIST_PROPERTY_TAG );
		writer.attribute( DesignSchemaConstants.NAME_ATTRIB, propName );