Bug 187213 Provid a writer to serialize design in document without any white space.
Add a new writer for serialize design in document without any withe space.
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/util/XMLWriter.java
emitStartTag( (String) pendingElementStack.remove( 0 ) );
		}
	}
	/**
	 * Write a string attribute. The string is assumed to be valid for an
	 * attribute. That is, it cannot contain newlines, etc.
	 * 
	 * @param attrName
	 *            the name of the attribute
	 * @param value
	 *            the attribute value
	 */
	public void attribute( String attrName, String value )
	{
		if ( value == null )
			return;
		checkAttribute( );
		assert elementActive;
		out.print( " " );  
		out.print( attrName );
		out.print( "=\"" );  
		
		
		int len = value.length( );
		for ( int i = 0; i < len; i++ )
		{
			char c = value.charAt( i );
			if ( c == '&' )
				out.print( "&amp;" );  
			else if ( c == '<' )