Merge from bug tree.

scripts/mysqld_multi.sh

@@ -293,7 +293,12 @@ sub start_mysqlds()
   @groups = &find_groups($groupids);
   for ($i = 0; defined($groups[$i]); $i++)
   {
+    # Defaults are made explicit parameters to server execution...
     @options = defaults_for_group($groups[$i]);
+    # ...so server MUST NOT try to read again from some config file, especially
+    # as the "right" file may be unknown to the server if we are using
+    # --defaults-file=... params in here.
+    unshift(@options,"--no-defaults");  
 
     $mysqld_found= 1; # The default
     $mysqld_found= 0 if (!length($mysqld));