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
* 
	 * @see org.eclipse.birt.report.model.elements.ElementVisitor#visitScriptDataSet(org.eclipse.birt.report.model.elements.ScriptDataSet)
	 */
	public void visitScriptDataSet( ScriptDataSet obj )
	{
		writer.startElement( DesignSchemaConstants.SCRIPT_DATA_SET_TAG );
		super.visitScriptDataSet( obj );
		writeStructureList( obj, IDataSetModel.PARAMETERS_PROP );
		property( obj, IScriptDataSetModel.OPEN_METHOD );
		property( obj, IScriptDataSetModel.DESCRIBE_METHOD );
		property( obj, IScriptDataSetModel.FETCH_METHOD );
		property( obj, IScriptDataSetModel.CLOSE_METHOD );
		writer.endElement( );
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.report.model.design.elements.DesignVisitor#visitFreeForm(org.eclipse.birt.report.model.design.elements.Container)
	 */
	public void visitFreeForm( FreeForm obj )
	{
		writer.startElement( DesignSchemaConstants.FREE_FORM_TAG );
		super.visitFreeForm( obj );
		writeContents( obj, IFreeFormModel.REPORT_ITEMS_SLOT,
				DesignSchemaConstants.REPORT_ITEMS_TAG );
		writer.endElement( );
	}
	/*
	 * (non-Javadoc)
	 *