Bug 146352 support cancel execution for "view report ..." tool bar and menu actions.
Current "view report as HTML" and "view report as PDF" in the menu tool bar uses RunAndRender task to stream back the report output. As a result, total page count is not available when the report is being streamed back. Please change these two requests to use Run task and then render task to generate HTML or PDF, so that the total page count is calculate. preview tab could continue to use RunAndRender task, since it is for preview.
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/context/BaseAttributeBean.java
* @return Returns the reportPage.
	 */
	public String getReportPage( )
	{
		return reportPage;
	}
	/**
	 * @return Returns the locale.
	 */
	public Locale getLocale( )
	{
		return locale;
	}
	/**
	 * @return Returns the useTestConfig.
	 */
	public boolean isDesigner( )
	{
		return isDesigner;
	}
	/**
	 * @return Returns the exception.
	 */
	public Exception getException( )
	{
		return exception;
	}
	/**
	 * @return Returns the reportDocumentName.
	 */