Change min/max nodes column in experiments table from tinyint to int.

sql/database-create.sql

@@ -330,8 +330,8 @@ CREATE TABLE experiments (
   batchmode tinyint(4) NOT NULL default '0',
   shared tinyint(4) NOT NULL default '0',
   state varchar(16) NOT NULL default 'new',
-  maximum_nodes tinyint(4) default NULL,
-  minimum_nodes tinyint(4) default NULL,
+  maximum_nodes int(6) unsigned default NULL,
+  minimum_nodes int(6) unsigned default NULL,
   testdb tinytext,
   path tinytext,
   logfile tinytext,

sql/database-migrate.txt

@@ -2353,3 +2353,12 @@ last_net_act,last_cpu_act,last_ext_act);
 	  orientation float NOT NULL default '0',
 	  PRIMARY KEY  (pid,eid,vname)
 	) TYPE=MyISAM;
+
+1.305: Fix up minimum_nodes and maximum_nodes columns; they were
+       tinyints which is too small.
+
+        alter table experiments change minimum_nodes minimum_nodes \
+            int(6) unsigned default NULL;
+
+        alter table experiments change maximum_nodes maximum_nodes \
+            int(6) unsigned default NULL;