Bug 182695 Backport RowFetchLimit setting in model to 2.1.3
In 2.1.3 Model add new methods DataSetHandle.setDataSetRowLimit() and DataSetHandle.getDataSetRowLimit() to let user define the number of rows that returned from database. This however duplicate with existing 2.2 model methods DataSetHandle.setRowFetchLimit() and DataSetHandle.getRowFetchLimit(). Model should backport the changes to 2.1.3.
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/api/DataSetHandle.java
assert propHandle != null;
		return propHandle.iterator( );
	}
	/**
	 * Returns an iterator over the result set columns. The iterator returns
	 * instances of <code>ResultSetColumnHandle</code> that represents result
	 * set column object.
	 * 
	 * @return iterator over result set columns.
	 * 
	 * @see org.eclipse.birt.report.model.api.elements.structures.ResultSetColumn
	 */
	public Iterator resultSetIterator( )
	{
		PropertyHandle propHandle = getPropertyHandle( RESULT_SET_PROP );
		assert propHandle != null;
		return propHandle.iterator( );
	}
	/**
	 * Returns an iterator over hints of the result set columns. The iterator
	 * returns instances of <code>ResultSetColumnHandle</code> that represents
	 * hints of result set column object.
	 * 
	 * @return iterator over hints of result set columns.
	 * 
	 * @see org.eclipse.birt.report.model.api.elements.structures.ResultSetColumn
	 */
	public Iterator resultSetHintsIterator( )
	{
		PropertyHandle propHandle = getPropertyHandle( RESULT_SET_HINTS_PROP );