Browse: bug with filter option when using a sequence name

Considering the following folder:

```
Pano_1-1.jpg
Pano_1-2.jpg
Pano_2-1.jpg
Pano_2-2.jpg
```

This call to browse:

``` python
browse(dir=folder, detectOptions=eDetectionDefault, filters=[Pano_1-@.jpg])
```

Will output:

```
Pano_1-@.jpg 
Pano_2-@.jpg
```

Any hint?
