logic was generating invalid size unpack error

Correct logic for when pack/nopack distribution options are specified
  in srun

Bug 1746

the user is none the wiser if they are working off old data.

ESLURM_DB_CONNECTION when in error.

code.

One dead assignment and one uniniitalized variable

Conflicts:
	src/slurmctld/step_mgr.c

Add more logging
Remove API/library logic: The API does not exist today and the
  command line interfaces are in flux, so just clean up the code
  while we debug.
Updates for new Cray interfaces (there have been major changes
  in past couple of months).

Cray tools advertised to output in JSON format are really using
  Python. Added a function to convert Python to JSON so we can
  use JSON-C library for parsing.

The commands and their arguments have changed substantially in
  recent months. Code is untested.

Other tests are still failing, but I don't have time to investigate now.

Conflicts:
	src/slurmctld/reservation.c
	testsuite/expect/test3.11

Updates of existing bluegene advanced reservations did not work at all.
Some multi-core configurations resulting in an abort due to creating
  core_bitmaps for the reservation that only had one bit per node rather
  than one bit per core.
These bugs were introduced in commit 5f258072