replace a database upgrade that changed captcha settings

This was removed as part of preparation for anti-spam, but it was later
decided that old upgrades should always be left untouched. Instead, this
commit adds an additional upgrade that removes the relevant settings
from the database.
Signed-off-by: Evan Goldenberg <evang@catalyst.net.nz>

htdocs/lib/db/upgrade.php

@@ -1194,6 +1194,13 @@ function xmldb_core_upgrade($oldversion=0) {
         drop_field($table, $field);
     }
 
+    if ($oldversion < 2009082600) {
+        $captcha = get_config('captcha_on_contact_form');
+        set_config('captchaoncontactform', (int) (is_null($captcha) || $captcha));
+        $captcha = get_config('captcha_on_register_form');
+        set_config('captchaonregisterform', (int) (is_null($captcha) || $captcha));
+    }
+
     if ($oldversion < 2009090700) {
         set_config('showselfsearchsideblock', 1);
         set_config('showtagssideblock', 1);
@@ -1371,5 +1378,11 @@ function xmldb_core_upgrade($oldversion=0) {
         execute_sql('ALTER TABLE {view} ADD COLUMN submittedtime TIMESTAMP');
     }
 
+    if ($oldversion < 2010041200) {
+        delete_records('config', 'field', 'captchaoncontactform');
+        delete_records('config', 'field', 'captchaonregisterform');
+    }
+
+
     return $status;
 }

htdocs/lib/version.php

@@ -28,7 +28,7 @@
 defined('INTERNAL') || die();
 
 $config = new StdClass;
-$config->version = 2010040800;
+$config->version = 2010041200;
 $config->release = '1.3.0dev';
 $config->minupgradefrom = 2008040200;
 $config->minupgraderelease = '1.0.0 (release tag 1.0.0_RELEASE)';