Bug 193875 we can not get an entir url by IHTMLActionHandler
we can not get an entir url by IHTMLActionHandler, so word emitter dose not write the right url. now hyperlink drill through in word emitter doesn't work.
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/utility/ParameterAccessor.java
* in iso-8859-1 format in request.
	 * 
	 * @param request
	 *            incoming http request
	 * @param parameterName
	 *            parameter name
	 * @param isUTF
	 *            is parameter in UTF-8 formator not
	 * @return
	 */
	protected static String getParameter( HttpServletRequest request,
			String parameterName, boolean isUTF )
	{
		String ISOParameterName = ( isUTF )
				? toISOString( parameterName )
				: parameterName;
		String value = request.getParameter( ISOParameterName );
		String encoding = request.getCharacterEncoding( );
		return toUTFString( value, encoding );
	}
	/**
	 * Get named parameter as integer from http request. parameter names and
	 * values are all in iso-8859-1 format in request.
	 * 
	 * @param request
	 * @param parameterName
	 * @return
	 */
	protected static int getParameterAsInt( HttpServletRequest request,
			String parameterName )