Building baton on top of iRODS-legacy for packaging/testing/CI purposes, should fix issue #59

@keithj, I've encountered some obvious breakage while building baton at Travis, I guess that's because of some divergence with master branch?:

https://travis-ci.org/brainstorm/irods-legacy#L818

```
json_query.c: In function ‘add_tps_json_object’:
json_query.c:525:9: error: implicit declaration of function ‘json_array_foreach’ [-Werror=implicit-function-declaration]
json_query.c:525:63: error: expected ‘;’ before ‘{’ token
```