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
label = format;
		return label;
	}
	/**
	 * Returns the base url defined in config file
	 * 
	 * @return
	 */
	public static String getBaseURL( )
	{
		String baseURL = getInitProp( PROP_BASE_URL );
		if ( baseURL != null && baseURL.length( ) > 0 )
		{
			if ( baseURL.endsWith( "/" ) ) 
				baseURL = baseURL.substring( 0, baseURL.length( ) - 1 );
		}
		return baseURL;
	}
	/**
	 * convert path from System Properties Definition. For example:
	 * ${java.io.tmpdir}
	 * 
	 * @param path
	 * @return
	 */
	protected static String convertSystemPath( String path )
	{
		if ( path == null )
			return path;