Order by more than one property in criteria builder's params

Sort parmeter in param map for Criteria builder doesn't work the same way as in Dynamic Finders. In dynamic finder we could do this:

```
Author.findAllByNameLike("A%", [sort: [name: "desc", id: "asc"]])
```

If we try to do the same for Criteria builder or with Detached Criteria:

```
Author.createCriteria().list(sort: [name: "desc", id: "asc"]) {
like 'name', "A%"
}
```

The ClassCastException will be thrown:

```
java.util.LinkedHashMap cannot be cast to java.lang.String. Stacktrace follows:
Message: java.util.LinkedHashMap cannot be cast to java.lang.String
Line | Method
->> 1615 | invokeMethod in org.grails.orm.hibernate.query.AbstractHibernateCriteriaBuilder
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
```

org.grails.orm.hibernate.query.AbstractHibernateCriteriaBuilder の 1615 行目から開始し、issue にある Criteria builder の例で ClassCastException を再現します。パラメーターの処理を Dynamic Finder の動作と比較します。Criteria と Detached Criteria が、示されている順序で複数の sort プロパティを受け入れれば完了です。

索引モデルが issue の本文から書いたものです。