Bug 186940 Style name in theme cannot be identify by auto when reopen the library[01]
Description: Style name in theme cannot be identify by auto when reopen the library[01] Step: 1.Open a library and add a theme 2.New a style on the theme and use the default name that is "NewStyle" 3.Save the library, close it and reopen it again. 4.New another style on the same theme Actual result: The default style name on second times is also "NewStyle" Exception result: The default style name on second times is "NewStyle1"
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/api/ElementFactory.java
* @param columnNum
	 *            column number of the table, if it is less than 0, then column
	 *            won't be defined for the table at this stage.
	 * @return A handle to the table item.
	 * @see #newTableItem(String, int, int, int, int)
	 */
	public TableHandle newTableItem( String name, int columnNum )
	{
		return newTableItem( name, columnNum, 1, 1, 1 );
	}
	/**
	 * Creates a new table item with the given name and given column number. The
	 * table will have given number of rows for each band(header, footer,
	 * detail). Each row in band will be filled with cells, number of cells is
	 * equal to the specified column number.
	 * 
	 * @param name
	 *            the optional table item name
	 * @param columnNum
	 *            column number of the table, if it is less than 0, then column
	 *            won't be defined for the table at this stage.
	 * @param headerRow
	 *            number of rows that will be added for header band. If it is
	 *            less than 0, none row will be added to header band.
	 * @param detailRow
	 *            number of rows that will be added for detail band. If it is
	 *            less than 0, none row will be added to detail band.
	 * @param footerRow
	 *            number of rows that will be added for footer band. If it is
	 *            less than 0, none row will be added to footer band.