libext doesn't exist in PDI5, so Cookbook doesn't work

```
Try running the sample in PDI5, you will get NPEs

This can be fixed by opening process-files.ktr and changing:
Directory: from ./libext to ./lib
Wildcard: from saxon.*\.jar to saxon-\d.*\.jar
```

Original issue reported on code.google.com by `got.no.g...@gmail.com` on 17 Jun 2014 at 3:41
