Condor cluster job submission support

Hi,

I've added the option to submit jobs to Condor.
I've tested it on a Condor cluster with 4 computers with Intel i7, sharing data through NFS. It is not possible to run more than one thread per job. 
I don't recommend using the OpenMP version of AFNI.

The only changes to be taken into account are in the file cpac_pipeline.py.

Cheers,
Alex