Bug 151960 Library element popup menu display is wrong.
1:Creat a libray, add a table to this libray. 2:public this library. 3:Creat a report design. 4:Open the library explore, drag the table to the layout editor. 5:Select the table row, copy the selection row. 6:Select other row, clik the right button of the mouse to popup the menu . The result:Paste action and insert copied column action is highlight.
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/api/RowBandAdapter.java
* @param row
	 * @return
	 *  column count in one row.
	 */
	protected int computeRowCount( TableRow row )
	{
		List contents = row.getContentsSlot( );
		Iterator cellIter = contents.iterator( );
		int count = 0;
		while ( cellIter.hasNext( ) )
		{
			Cell cell = (Cell) cellIter.next( );
			int columnSpan = cell.getColSpan(  null  );
			count = count + columnSpan;
		}
		return count;
	}
	/**
	 * Computes column count in one row.
	 * @param rowHandle
	 * @return
	 *  column count in one row.
	 */
	protected int computeRowCount( RowHandle rowHandle )
	{
		TableRow row = (TableRow)rowHandle.getElement( );
		return computeRowCount( row );
	}
}