Bug 168304 Context root issue when set to other BIRT Web Project.[0603]
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/taglib/AbstractBaseTag.java
/**
	 * When reach the start tag, fire this operation
	 * 
	 * @see javax.servlet.jsp.tagext.TagSupport#doStartTag()
	 */
	public int doStartTag( ) throws JspException
	{
		return EVAL_PAGE;
	}
	/**
	 * When reach the end tag, fire this operation
	 * 
	 * @see javax.servlet.jsp.tagext.TagSupport#doEndTag()
	 */
	public int doEndTag( ) throws JspException
	{
		try
		{
			__validate( );
			__beforeEndTag( );
			__process( );
		}
		catch ( Exception e )
		{
			__handleException( e );
		}
		return EVAL_PAGE;
	}
	/**
	 * Handle event before doEndTag