MDL-13241 adding forgotten table scale_history into upgrade code; merged from MOODLE_19_STABLE

lib/db/upgrade.php

@@ -2629,6 +2629,7 @@ function xmldb_main_upgrade($oldversion=0) {
     }    
 
     if ($result && $oldversion < 2007101503) {
+///TODO: move this to the end after we stop using 19 version
         // Update courses that used weekscss to weeks
         $result = $result && set_field('course', 'format', 'weeks', 'format', 'weekscss');
     }

version.php

@@ -6,7 +6,7 @@
 // This is compared against the values stored in the database to determine
 // whether upgrades should be performed (see lib/db/*.php)
 
-    $version = 2007101508;  // YYYYMMDD = date
+    $version = 2007101508.001;  // YYYYMMDD = date
                             //       XY = increments within a single day
 
     $release = '2.0 dev';   // Human-friendly version name