Fix an issue with the import task that can irrecoverably break sites

platform/drupal/import_5.inc

@@ -3,6 +3,9 @@
 if (is_array($GLOBALS['db_url'])) {
   $db_url = $GLOBALS['db_url']['default'];
 }
+else {
+  $db_url = $GLOBALS['db_url'];
+}
 
 if ($parts = @parse_url($db_url)) {
   drush_set_option('db_type', $parts['scheme'], 'site');

platform/drupal/import_6.inc

 <?php
 
-if ($parts = @parse_url($GLOBALS['db_url'])) {
+if (is_array($GLOBALS['db_url'])) {
+  $db_url = $GLOBALS['db_url']['default'];
+}
+else {
+  $db_url = $GLOBALS['db_url'];
+}
+
+if ($parts = @parse_url($db_url)) {
   drush_set_option('db_type', $parts['scheme'], 'site');
   drush_set_option('db_user', $parts['user'], 'site');
   drush_set_option('db_host', $parts['host'], 'site');

platform/import.provision.inc

@@ -19,6 +19,6 @@ function provision_drupal_provision_import_validate() {
  */
 function provision_drupal_provision_import($url = NULL) {
   drush_bootstrap(DRUSH_BOOTSTRAP_DRUPAL_FULL);
-  drush_include_engine('drupal', 'import');
+  drush_include_engine('drupal', 'import', drush_drupal_major_version());
 }