BUG Fix incorrect upgrade / rules

_register_database.php

@@ -13,6 +13,7 @@ $sqliteDatabaseAdapterRegistryFields = array(
 );
 
 // Basic SQLLite3 Database
+/** @skipUpgrade */
 DatabaseAdapterRegistry::register(
 	array(
 		'class' => 'SQLite3Database',
@@ -30,6 +31,7 @@ DatabaseAdapterRegistry::register(
 );
 
 // PDO database
+/** @skipUpgrade */
 DatabaseAdapterRegistry::register(
 	array(
 		'class' => 'SQLite3PDODatabase',

code/SQLite3Database.php

@@ -62,7 +62,7 @@ class SQLite3Database extends SS_Database
      */
     public static function database_extension()
     {
-        return Config::inst()->get('SQLite3Database', 'database_extension');
+        return Config::inst()->get('SilverStripe\\SQLite\\SQLite3Database', 'database_extension');
     }
 
     /**

code/SQLiteDatabaseConfigurationHelper.php

@@ -29,6 +29,7 @@ class SQLiteDatabaseConfigurationHelper implements DatabaseConfigurationHelper
     protected function createConnection($databaseConfig, &$error)
     {
         $error = null;
+        /** @skipUpgrade */
         try {
             if (!file_exists($databaseConfig['path'])) {
                 self::create_db_dir($databaseConfig['path']);
@@ -149,6 +150,7 @@ class SQLiteDatabaseConfigurationHelper implements DatabaseConfigurationHelper
     {
         $version = 0;
 
+        /** @skipUpgrade */
         switch ($databaseConfig['type']) {
             case 'SQLite3Database':
                 $info = SQLite3::version();