It's called kurt rather than MK

reverting back

needed for python 3.5

branch.

This enables a common use case - logging the command but not the standard output

Previously this would assume $FSLDEVDIR/bin whenever $FSLDEVDIR was set
even if there was no matching command there, but there was one in $FSLDIR

stdout/stderr streams go.

gives $FSLDEVDIR precedence, and also allows a global override.

stdout/stderr, and also redirects it to real stdout/stderr.

fixed a small documentation error as well
added a warning about missing if __name__ == '__main__' guard in script

The current intepreter is in sys.executable
Having the option to use a different intepreter seems like asking for
trouble (as an older interpreter might not be able to read the pickle
files)

If a logdir has been set that directory should be provided rather than the directory from which the job was submitted (which is what the logdir defaults to).