Fix eid length in virt_vtypes table.

sql/database-create.sql

@@ -1999,7 +1999,7 @@ CREATE TABLE virt_trafgens (
 
 CREATE TABLE virt_vtypes (
   pid varchar(12) NOT NULL default '',
-  eid varchar(12) NOT NULL default '',
+  eid varchar(32) NOT NULL default '',
   name varchar(12) NOT NULL default '',
   weight float(7,5) NOT NULL default '0.00000',
   members text

sql/database-migrate.txt

@@ -2260,4 +2260,7 @@ last_net_act,last_cpu_act,last_ext_act);
           PRIMARY KEY  (node_id)
         ) TYPE=MyISAM;
 
-	
\ No newline at end of file
+1.296: Fix virt_vtypes table.
+
+         alter table virt_vtypes change eid eid varchar(32) NOT NULL default '';
+