warn that dumpBackup does not actually backup the wiki!

The user table is not dumped by that tool. The warning notice makes it clear
and will avoid someone having some trouble recovering his precious private
data.

diff --git a/maintenance/dumpBackup.php b/maintenance/dumpBackup.php
index c49a296..e05f43c 100644 (file)
--- a/maintenance/dumpBackup.php
+++ b/maintenance/dumpBackup.php
@@ -88,6 +88,10 @@ XML interchange wrapper format for export or backup.
 
 XML output is sent to stdout; progress reports are sent to stderr.
 
+WARNING: this is not a full database dump! It is merely for public export
+                of your wiki. For full backup, see our online help at:
+         https://www.mediawiki.org/wiki/Backup
+
 Usage: php dumpBackup.php <action> [<options>]
 Actions:
   --full      Dump all revisions of every page.