Add the mode string that was used to open the stream to the meta data,

as requested by Philip Olson.

ext/standard/streamsfuncs.c

@@ -309,6 +309,8 @@ PHP_FUNCTION(stream_get_meta_data)
 	}
 	add_assoc_string(return_value, "stream_type", (char *)stream->ops->label, 1);
 
+	add_assoc_string(return_value, "mode", stream->mode, 1);
+	
 #if 0	/* TODO: needs updating for new filter API */
 	if (stream->filterhead) {
 		php_stream_filter *filter;