Since a list_for_each was being used for reconciling fed_jobs and if
fed_mgr_job_revoke() is called on a non-origin job it will try to purge
the job from the job_list which will deadlock since the list_for_each()
will be holding the job_list's mutex.

CIDs: 45332, 45327, 45326

CID: 171885

Bug 3957.

Was initially added in 734d6f63 but was refactored out in the
heterogenous jobs branch.

When an origin cluster is removed from the federation it could keep
federated jobs in the federation without an origin (e.g. job is viable
on multiple siblings other than the origin cluster). The job should
schedule amongst its siblings when the origin is gone.

When a cluster is removed from the federation, pending jobs should
remain pending.

1. If a job is pending on a origin cluster and the origin is being
removed then leave the pending job on the origin as a non-federated job
and remove the other sibling jobs.

2. If the job is viable on only one cluster than leave it as a pending
as non-federated job on the viable cluster.

3. If the origin cluster is being removed and the job is viable on
multiple clusters other than the origin then leave the sibling jobs as
federated job and the remainin viable clusters will schedule amongst
themselves to start the job.

Previously they were treated as only pending.

With the addition of b9719be2, which deletes the job file in a
separate thread, the job file could still exist when a new sibling job
is being submitted as a requeued fed job. The file needs to deleted
before submitting a new fed sib job.

It wasn't doing it for origin jobs.

The persistent connection was being destroyed which closed the socket
which made it so that the response rc couldn't make it back to the
originating cluster.

e.g.
Jobs on cluster1 (fed:cluster)

since a multiple clusters could have the same node names.

Previously remote jobs would be removed from the job_list as quickly as
possible to prevent collisions with requeued jobs and to clear up the
jobs and the orign job would stay around till minjobage on the origin.
But the origin job didn't have the details from the job that ran on a
remote cluster.

Now just don't show revoked jobs. The origin tracking job will remain as
revoked and not shown and the remote job will hang around for display
till minjobage. scontrol show jobs will show the job from the cluster
that ran the job. The job is requeuable as long as the origin job is
still in the origin cluster's job_list.

Just check for the revoked state instead of checking if it's a tracker
job since an origin job will be revoked if it can't run on the origin or
if it's running on a remote cluster.

Bug 3938.

Bug 3954.

Bug 3947.

It's old code, but a newly report.

_update_bb_resv() received a bb_spec whose units were originally always
interpreted as powers of 1024 (IEC). This change supports both IEC/SI
formats.

Bug 3922

Bug 3922

With commit 3e00ede5, _pack_job_alloc_info_msg wasn't hitting the
xassert as expected.

burst_buffer logic modified to support sizes in both SI and EIC size units
    (e.g. M/MiB for powers of 1024, MB for powers of 1000).
bug 3922

This patch removes a window in which a message bound for the DBD
could be packed with the non-dbd packing.  This would result in a
packed msg_type, but nothing else.  When that message was given to
the DBD it would complain forever about an unpacking error.

Bug 3891 and 3939

list functions.