more concise debug logs from pty_process.py
implemented __deepcopy__ for Url class
Merge branch 'devel' of github.com-oleweidner:saga-project/saga-python into devel
added missing PROJECT to job.Description
Merge branch 'devel' into feature/pbsjob
towards a working pbs adaptor

cloned and and modified the ssh adaptor, which now behaves
like a pbs adaptor, only that it doesn't talk to PBS queueing
systems yet... ;-) However, it loads and runs (via the shell wrapper)