Its EXECUTE not EXECUCUTE

Also make the search insensitive as casing bugs are no fun.

lib/Cake/Model/Datasource/Database/Sqlserver.php

@@ -745,7 +745,7 @@ class Sqlserver extends DboSource {
  */
 	protected function _execute($sql, $params = array(), $prepareOptions = array()) {
 		$this->_lastAffected = false;
-		if (strncasecmp($sql, 'SELECT', 6) == 0 || preg_match('/^EXEC(?:UCUTE)?\s/m', $sql) > 0) {
+		if (strncasecmp($sql, 'SELECT', 6) == 0 || preg_match('/^EXEC(?:UTE)?\s/mi', $sql) > 0) {
 			$prepareOptions += array(PDO::ATTR_CURSOR => PDO::CURSOR_SCROLL);
 			return parent::_execute($sql, $params, $prepareOptions);
 		}