The dbd_list_msg_t was uninitialized in a bunch of places and the
  return_code variable in the structure was being referenced,
  resulting in valgrind error reports

No change in logic, just added values to comments in a long enum
  to more easily identify their values

First noticied by Brian.

It was leaking memory otherwise

Not used here.

Commit 63b7e3a8 changed the --mem limit to 1MB for the job if
not using a memory SelectType, but this can cause the job to fail
if the JobAcctGatherFrequency is frequent enough to notice that the
"sleep" command is using more than 1MB of resources.

Refactor test to avoid specifying job memory. Use --wrap to avoid
creating a temporary job script as well.

Commit 63b7e3a8 changed the --mem limit to 1MB for the step if
not using a memory SelectType, but this can cause the job to fail
if the JobAcctGatherFrequency is frequent enough to notice that the
"sleep" command is using more than 1MB of resources.

Refactor test to avoid specifying job memory. Use --wrap to avoid
creating a temporary job script.

Commit 63b7e3a8 changed the --mem limit to 1MB for the step if
not using a memory SelectType, but this can cause the job to fail
if the JobAcctGatherFrequency is frequent enough to notice that the
"sleep" command is using more than 1MB of resources.

Refactor test to avoid specifying memory memory; and since only one
step is checked for, only run a single step in the job. Use --wrap
to avoid creating a temporary job script.

This bug was introduced in commit 93adc329
Symptom is failure of test 2.7

Some portions of tests 21.30 and 21.34 failed with accounting and
priority basic. These changes disable portions of those tests as
needed based upon configuration.

FreeBSD requires this to build; overlooked in 2d9e999f.

Update information about modified functions and data structures.

It was leaking memory otherwise

_allocate_sc() is heavily used within the scheduler, change to
stack allocation from heap to avoid constant churn on xmalloc()/xfree().

Bug 3420.

test1.63 was failing periodically due to a race condition. A signal
  was being sent to srun before the signal handler thread was spawned.

Too closely related to working_cluster_rec.

CID 16088[1-4]

Could be used in bit_ffs and bit_fls functions rather than
existing for loops.

Bug 1599

Add new knl.conf parameter to the capmc_suspend and capmc_resume
  programs. They are not used by those programs, but we need to
  prevent an error if those new parameters are used.

Reset a job's memory limit based upon what's available after node
  reboot, which can change on a KNL if the MCDRAM mode is changes
  on reboot

This bug was likely the root cause of bug 3366. If the backfill scheduler
  allocates resources for a batch job and a node reboot is required, the
  batch launch RPC would be sent to the agent. At that point, there is a
  race condition between the agent and the job_time_limit() function
  testing for boot completion. If the job_time_limit() function ran
  first, it would trigger a second launch RPC request getting sent to
  the agent.
bug 3366

Clean up logic to test if job is configuring
bug 3366