Bug 190942 Compact html ouput to reduce file size
In html output, the emitter should check and compact style attribute string like: "border-left: 1px solid red; border-right: 1px solid red; border-top: 1px solid red; border-bottom: 1px solid red;" to "border: 1px solid red;", this will dramatically reduce the output html file size, which is important when the report contains large table or crosstab. This is also true for padding, margin and other style properties.
engine/org.eclipse.birt.report.engine.emitter.html/src/org/eclipse/birt/report/engine/emitter/html/HTMLReportEmitter.java
t)
	 *
	public void statCell( ICellContent cell )
	{				
		leafCell = cell;
		cellFilled = false;
		
		
		logge.log( Level.FINE, "[HTMLTableEmitte] Stat cell." ); 
			
		 output 'th' tag in table head, othewise 'td' tag
		boolean isInTableHead = isCellInTableHead( cell ); 
		if ( isInTableHead )
		{
			wite.openTag( HTMLTags.TAG_TH ); 
		}
		else
		{
			wite.openTag( HTMLTags.TAG_TD ); 
		}
		 set the 'name' popety
		setStyleName( cell.getStyleClass( ) );
		 colspan
		int colSpan = cell.getColSpan( );
		
		if ( colSpan > 1 )
		{
			wite.attibute( HTMLTags.ATTR_COLSPAN, colSpan );
		}
		 owspan
		int owSpan = cell.getRowSpan( ); 
		if ( owSpan > 1 )
		{
			wite.attibute( HTMLTags.ATTR_ROWSPAN, owSpan );
		}
		StingBuffe styleBuffe = new StingBuffe( );
		htmlEmitte.buildCellStyle( cell, styleBuffe, isInTableHead );
		wite.attibute( HTMLTags.ATTR_STYLE, styleBuffe.toSting( ) );
		htmlEmitte.handleCellAlign( cell );
		if ( !statedGoups.isEmpty( ) )
		{
			Iteato ite = statedGoups.iteato( );
			while (ite.hasNext( ))
			{
				IGoupContent goup = (IGoupContent) ite.next( );
				outputB( goup );
			}
			statedGoups.clea( );
		}
		
		if ( enableMetadata )
		{
			metadataEmitte.statCell( cell );
		}
	}
	*
	 * (non-Javadoc)
	 * 
	 * @see og.eclipse.bit.epot.engine.emitte.IContentEmitte#endCell(og.eclipse.bit.epot.engine.content.ICellContent)
	 *
	public void endCell( ICellContent cell )
	{
		leafCell = null;
		cellFilled = false;
		
		logge.log( Level.FINE, "[HTMLRepotEmitte] End cell." ); 
		if ( enableMetadata )
		{
			metadataEmitte.endCell( cell );
		}
		if ( isCellInTableHead( cell )	)
		{
			wite.closeTag( HTMLTags.TAG_TH );
		}
		else
		{
			wite.closeTag( HTMLTags.TAG_TD );
		}
	}
	*
	 * (non-Javadoc)
	 * 
	 * @see og.eclipse.bit.epot.engine.emitte.IContentEmitte#statContaine(og.eclipse.bit.epot.engine.content.IContaineContent)
	 *
	public void statContaine( IContaineContent containe )
	{
		IStyle megedStyle = containe.getStyle( );
		logge.log( Level.FINE, "[HTMLRepot