Merge branch 'cakeshell-indexes-fix'

Fix schema generation in SQLserver by returning the correct
empty type.

Fixes #3559

lib/Cake/Model/Datasource/DboSource.php

@@ -2954,7 +2954,7 @@ public function resetSequence($table, $column) {
  * @return array Fields in table. Keys are column and unique
  */
 	public function index($model) {
-		return false;
+		return array();
 	}
 
 /**