moodle16cleanup: backup/ set the correct column datatype and default value

backup/db/postgres7.php

@@ -50,6 +50,27 @@ function backup_upgrade($oldversion=0) {
         }
     }
 
+    if ($oldversion < 2006042801) {
+        modify_database('', 'ALTER TABLE prefix_backup_log
+            ALTER COLUMN "time" TYPE integer,
+            ALTER COLUMN "time" SET DEFAULT 0,
+            ALTER COLUMN laststarttime TYPE integer,
+            ALTER COLUMN laststarttime SET DEFAULT 0,
+            ALTER COLUMN courseid TYPE integer,
+            ALTER COLUMN courseid SET DEFAULT 0');
+
+        modify_database('', 'ALTER TABLE mdl_backup_courses
+            ALTER COLUMN lastendtime TYPE integer,
+            ALTER COLUMN lastendtime SET DEFAULT 0,
+            ALTER COLUMN laststarttime TYPE integer,
+            ALTER COLUMN laststarttime SET DEFAULT 0,
+            ALTER COLUMN courseid TYPE integer,
+            ALTER COLUMN courseid SET DEFAULT 0,
+            ALTER COLUMN nextstarttime TYPE integer,
+            ALTER COLUMN nextstarttime SET DEFAULT 0');
+
+    }
+
     //Finally, return result
     return $result;
 

backup/version.php

@@ -5,6 +5,6 @@
 // database (backup_version) to determine whether upgrades should
 // be performed (see db/backup_*.php)
 
-$backup_version = 2006042800;   // The current version is a date (YYYYMMDDXX)
+$backup_version = 2006042801;   // The current version is a date (YYYYMMDDXX)
 
 $backup_release = "1.6beta4";  // User-friendly version number