player passwords and privileges in world/auth.txt

--HG--
extra : rebase_source : 7260636295d9068fbeeddf4143c89f2b8a91446c

minetest.conf.example

@@ -102,6 +102,11 @@
 
 #enable_damage = false
 
+#default_password = 
+
+# Available privileges: build, teleport, settime, privs, shout
+#default_privs = build, shout
+
 # Gives some stuff to players at the beginning
 #give_initial_stuff = false