Bug 213126 Add support for DataEngine-leve dataset cache
In many cases the DataEngine-leve dataset cache is useful which ensure that a dataset is executed one time during rendering one report. To support this feature a new dataset property should be added. The Birt customer can choose whether this dataset need to be cached or not by setting the property in deisgn time.
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/api/DataSetHandle.java
if ( PARAMETERS_PROP.equals( propName ) )
			return new DataSetParametersPropertyHandle( this, propName );
		return super.getPropertyHandle( propName );
	}
	/**
	 * Sets data set row limit property value.
	 * 
	 * @param count
	 * @throws SemanticException
	 * @deprecated duplicate with method setRowFetchLimit()
	 */
	public void setDataSetRowLimit( int count ) throws SemanticException
	{
		setIntProperty( DATA_SET_ROW_LIMIT, count );
	}
	/**
	 * Returns value of data set row limit property.
	 * 
	 * @return
	 * @deprecated duplicate with method getRowFetchLimit()
	 */
	public int getDataSetRowLimit( )
	{
		return getIntProperty( DATA_SET_ROW_LIMIT );
	}
	/**
	 * sets the cached row count property value.
	 * 
	 * @param count
	 *            the cached row count