add tracer utility to support adaptor debugging
shell_wrapper shutdown fix for shell_job adaptor
code cleanup and documentation
support for older sftp versions which do not yet understand '-i identity'
fix timeout problem (#100)
fix typo, this closes #102
more gracefull timeout for job shell wrapper
avoid overly long control path names
Fixes to total_cpu_count and number_of_processors handling, should fix an BJ error, UNTESTED ON STAMPEDE since it is down right now...  well, this is the devel branch after all :)  Works on my local SLURM install though...
added script for issue 104
fixed issue test to reproduce #104 again
Fix #106
merge from devel