Gittrac #1782:  got this to work now (still needs cleanup and removal
of lots of debug code).  The problem was that for DAGMan we're passing
the command-line argument "-l ." (so that we don't cd into the regular
LOG directory) -- but that was goofing up the SCHEDD_ADDRESS_FILE and
SCHEDD_DAEMON_AD_FILE values inside DAGMan, so DAGMan wasn't able to
correctly get the address of the schedd.  The fix is to grab those
values in condor_submit_dag and pass them into DAGMan via environment
variables -- that overrides the values we get from the config file(s),
which are goofed up by the -l flag...