- Moved code for gridftp-restart into a function in esg-stager rather
    than calling out to an external script.
  - Added runcmd function for calling commands so that errors are
    reported consistently.
  - Use awk to edit bestman2.rc to customize values we care about.
Adding execute bit to esg-stager.
Removing a trouble-shooting/debugging "exit".
Merge branch 'devel-newStager' of esg-repo.llnl.gov:esgf-stager into devel-newStager