Speed up the load_address query in tmcd somewhat

sql/database-create.sql

@@ -315,7 +315,8 @@ CREATE TABLE images (
   ezid tinyint(4) NOT NULL default '0',
   shared tinyint(4) NOT NULL default '0',
   updated datetime default NULL,
-  PRIMARY KEY  (imagename,pid)
+  PRIMARY KEY  (imagename,pid),
+  KEY imageid (imageid)
 ) TYPE=MyISAM;
 
 --
@@ -492,7 +493,7 @@ CREATE TABLE node_idlestats (
 ) TYPE=MyISAM;
 
 --
--- Table structure for table 'node_types'
+-- Table structure for table 'node_status'
 --
 
 CREATE TABLE node_status (

tmcd/tmcd.c

@@ -2682,8 +2682,8 @@ COMMAND_PROTOTYPE(doloadinfo)
 	/*
 	 * Get the address the node should contact to load its image
 	 */
-	res = mydb_query("select load_address,loadpart,OS from images as i "
-			 "left join current_reloads as r on i.imageid = r.image_id "
+	res = mydb_query("select load_address,loadpart,OS from current_reloads as r "
+			 "left join images as i on i.imageid = r.image_id "
 			 "left join os_info as o on i.default_osid = o.osid "
 			 "where node_id='%s'",
 			 3, reqp->nodeid);