Bug 192792 Drag to change xtab width will cause xls preview failure[1203]
engine/org.eclipse.birt.report.engine.emitter.prototype.excel/src/org/eclipse/birt/report/engine/emitter/excel/layout/LayoutUtil.java
int aveWidth = ( width - tmp ) / nullNumber;
			tmp = 0;
			for ( int i = 0; i < col.length; i++ )
			{
				if ( col[i] == -1 )
				{
					col[i] = aveWidth;
				}
				tmp += col[i];
			}
		}
		
		col[col.length - 1] += width - tmp;
		return col;
	}
	
	public static TableInfo createTable(int col, int width)
	{
		return new DefaultTableInfo(col, width);
	}	
	
	public static TableInfo createTable(ITableContent table, int width)
	{
		int colcount = table.getColumnCount( );
		int[] index = new int[colcount];
		int know = 0;
		List unmount = new ArrayList();
		
		for(int i = 0; i < colcount; i++)
		{