Bug 136246 [regression]Export data exported error column name.
Description: Export data exported error column name. Steps to reproduce: 1. export data in a table, select several columns. Expected result: Selected column name and data are exported. Actual result: No matter what columns you selected, exported columns name always display columns beginning from the first, and then the second, and so on.
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/service/ReportEngineService.java
* Parameter typer convertion.
	 * 
	 * @param type
	 * @return
	 */
	public int getEngineDataType( String type )
	{
		if ( DesignChoiceConstants.PARAM_TYPE_BOOLEAN.equals( type ) )
		{
			return IScalarParameterDefn.TYPE_BOOLEAN;
		}
		else if ( DesignChoiceConstants.PARAM_TYPE_DATETIME.equals( type ) )
		{
			return IScalarParameterDefn.TYPE_DATE_TIME;
		}
		else if ( DesignChoiceConstants.PARAM_TYPE_DECIMAL.equals( type ) )
		{
			return IScalarParameterDefn.TYPE_DECIMAL;
		}
		else if ( DesignChoiceConstants.PARAM_TYPE_FLOAT.equals( type ) )
		{
			return IScalarParameterDefn.TYPE_FLOAT;
		}
		else if ( DesignChoiceConstants.PARAM_TYPE_STRING.equals( type ) )
		{
			return IScalarParameterDefn.TYPE_STRING;
		}
		return IScalarParameterDefn.TYPE_ANY;
	}
}