Segmentation fault when an integer is passed via JobTemplate.args

The subject says it all.

This code segfaults:

```python
jt = s.createJobTemplate()
jt.remoteCommands = "/bin/echo"
jt.args = ["John", "Doe", 12]
jt.joinFiles = True

self.s.runJob(jt)

s.deleteJobTemplate(jt)
```

Converting 12 to a string solves it.

System: CentOS 6.5 64bit - Rocks 6.1.1
Queue: SGE - OGS/GE 2011.11p1