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
public void visitMemberValue( MemberValue obj )
	{
		writer.startElement( DesignSchemaConstants.MEMBER_VALUE_TAG );
		markLineNumber( obj );
		writer.attribute( DesignSchemaConstants.ID_ATTRIB, new Long( obj
				.getID( ) ).toString( ) );
		super.visitMemberValue( obj );
		property( obj, IMemberValueModel.VALUE_PROP );
		property( obj, IMemberValueModel.LEVEL_PROP );
		writeContents( obj, IMemberValueModel.MEMBER_VALUES_PROP );
		writer.endElement( );
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.report.model.elements.ElementVisitor#visitSortElement(org.eclipse.birt.report.model.elements.SortElement)
	 */
	public void visitSortElement( SortElement obj )
	{
		writer.startElement( DesignSchemaConstants.SORT_ELEMENT_TAG );
		markLineNumber( obj );
		writer.attribute( DesignSchemaConstants.ID_ATTRIB, new Long( obj
				.getID( ) ).toString( ) );
		super.visitSortElement( obj );
		property( obj, ISortElementModel.KEY_PROP );
		property( obj, ISortElementModel.DIRECTION_PROP );
		writeContents( obj, ISortElementModel.MEMBER_PROP );
		writer.endElement( );
	}
}