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.design.elements.DesignVisitor#visitDataItem(org.eclipse.birt.report.model.design.elements.DataItem)
	 */
	public void visitDataItem( DataItem obj )
	{
		
		boundColumnsMgr.dealData( obj, getModule( ) );
		writer.startElement( DesignSchemaConstants.DATA_TAG );
		super.visitDataItem( obj );
		property( obj, IDataItemModel.RESULT_SET_COLUMN_PROP );
		resourceKey( obj, IDataItemModel.HELP_TEXT_KEY_PROP,
				IDataItemModel.HELP_TEXT_PROP );
		writeAction( obj, IDataItemModel.ACTION_PROP );
		writer.endElement( );
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.report.model.elements.ElementVisitor#visitMultiLineDataItem(org.eclipse.birt.report.model.elements.TextDataItem)
	 */
	public void visitTextDataItem( TextDataItem obj )
	{
		
		boundColumnsMgr.dealTextData( obj, getModule( ) );
		writer.startElement( DesignSchemaConstants.TEXT_DATA_TAG );
		super.visitTextDataItem( obj );
		property( obj, ITextDataItemModel.VALUE_EXPR_PROP );
		property( obj, ITextDataItemModel.CONTENT_TYPE_PROP );
		writer.endElement( );
	}
	/*