Bug 147676 [regression]Visibility set in the first col will affect the second col
Description: Visibility set in the first col will affect the second col Steps to reproduce: 1. Insert a grid(3*3), insert contents to each cell. 2.Set the first col to hide all in visibility and preview Expected result: Only the first col is hidden. Actual result: The second col is hidden, too. If you set the second col in step2, the third col will disappear.
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/layout/pdf/PDFTableLM.java
PDFTableRegionLM regionLM = new PDFTableRegionLM( con, tableContent,
				emitter, layoutInfo );
		regionLM.setBandContent( header );
		regionLM.layout( );
		TableArea tableRegion = (TableArea) tableContent
				.getExtension( IContent.LAYOUT_EXTENSION );
		if ( tableRegion != null
				&& tableRegion.getHeight( ) < this.getMaxAvaHeight( )
						- currentBP )
		{
			
			Iterator iter = tableRegion.getChildren( );
			RowArea row = null;
			while ( iter.hasNext( ) )
			{
				row = (RowArea) iter.next( );
				addArea( row );
				repeatRowCount++;
			}
			if ( row != null )
			{
				removeBottomBorder( row );
			}
		}
		tableContent.setExtension( IContent.LAYOUT_EXTENSION, null );
	}
	protected void addCaption( String caption )
	{
		if ( caption == null || "".equals( caption ) )
		{