Add a child template pointer to experiment_templates to store the guid

of the most recent child (modification). Better then passing this info
back in a print statement to be parsed.

sql/database-create.sql

@@ -694,6 +694,8 @@ CREATE TABLE experiment_templates (
   vers smallint(5) unsigned NOT NULL default '0',
   parent_guid varchar(16) default NULL,
   parent_vers smallint(5) unsigned default NULL,
+  child_guid varchar(16) default NULL,
+  child_vers smallint(5) unsigned default NULL,
   pid varchar(12) NOT NULL default '',
   gid varchar(16) NOT NULL default '',
   tid varchar(32) NOT NULL default '',

sql/database-migrate.txt

@@ -3559,3 +3559,15 @@ last_net_act,last_cpu_act,last_ext_act);
             active tinyint(1) NOT NULL default '0.000';
 
 4.76: Change to previous revision; skip to next entry.
+
+4.77: Add a child template pointer to experiment_templates to store
+      the guid of the most recent child (modification). Better then
+      passing this info back in a print statement to be parsed.
+
+      **** Skip this if you just did 4.41 above.
+
+      alter table experiment_templates add \
+          child_guid varchar(16) default NULL after parent_vers;
+      alter table experiment_templates add \
+          child_vers smallint(5) unsigned default NULL after child_guid;
+

sql/templates.sql

@@ -22,6 +22,9 @@ CREATE TABLE experiment_templates (
   -- Pointer to parent, for modification.
   parent_guid varchar(16) default NULL,
   parent_vers smallint(5) unsigned default NULL,
+  -- Pointer to most recent child, for modification.
+  child_guid varchar(16) default NULL,
+  child_vers smallint(5) unsigned default NULL,
   -- Project ID
   pid varchar(12) NOT NULL default '',
   -- Group ID