command: "lsinfo" and "readcomments" allowed for remote files

doc/protocol.xml

@@ -1617,6 +1617,10 @@ OK
               the list of stored playlists.  This behavior is
               deprecated; use "listplaylists" instead.
             </para>
+            <para>
+              This command may be used to list metadata of remote
+              files (e.g. URI beginning with "http://" or "smb://").
+            </para>
             <para>
               Clients that are connected via UNIX domain socket may
               use this command to read the tags of an arbitrary local
@@ -1638,6 +1642,10 @@ OK
               to the music directory or a URL in the form
               "file:///foo/bar.ogg".
             </para>
+            <para>
+              This command may be used to list metadata of remote
+              files (e.g. URI beginning with "http://" or "smb://").
+            </para>
             <para>
               The response consists of lines in the form "KEY: VALUE".
               Comments with suspicious characters (e.g. newlines) are