Use setenv() instead of setenvfs(), since setenvfs() memory allocation
is implemented with xmalloc() and fini_setproctitle() (which is called
on reconfigure) free's the memory with free(), leading to a:
"free(): invalid size" malloc_printerr error.

Continuation of dce83a23.

Bug 5095.

Due to current design the job limits are checked before the allocation is
made when one specifies a generic gres and a specific gres type is configured.
The workaround for now is to define a job submit plugin to control the user
request and succesfully apply limits.

Bug 4767

Bug 4960.

Bug 4887.

Can lead to deadlock within malloc depending on the exact timing.

Rework thread startup and shutdown code so pthread_cancel is not
needed.

Bug 5119, 5103.

happens.

Bug 5108

This reverts commit de5a4da2.

happens.

Bug 5108

Turns out the partititon's billing tres was working off the sum of
the node_ptrs which contain the max of all partitions they are in.

This isn't correct since each partition's billing can be different.

Set it correctly here.

These functions are not async-cancel-safe, and cannot safely be cancelled.
This leads to potential deadlock, either between our own locks, or deep
inside glibc when the thread held a malloc arena lock when canceled.

Replace with pthread_signal to the appropriate cond to
wake threads up at the appropriate time instead.

Bug 5103.

Otherwise the extern step will disappear after 11.5 days.

Bug 5000.

to be sure if it is created under job write lock.

Bug 4901

Bug 5053

This allows the suspend script to be triggered even if Slurm has the
node(s) in a power_save state.

Bug 5053

When any of these --exclusive modes couldn't be satisfied, Slurm was
returning an incorrect ESLURM_NODE_NOT_AVAIL, having as a consequence
scheduling problems as described in the bug. The fix makes it so the
error code is properly set to ESLURM_NODES_BUSY, fixing also the
scheduling problems and working over the correct share_node_bitmap.

Continuation of commits from bug 4932:
e2a14b8d
fc4e5ac9

Bug 5047.

Fix an issue in the bit manipulation log introduced in commit 892ffa89.

Bug 4997.

Replace select_p_select_jobinfo_sprint() with the same NO-OP
that the other plugins (except alps and bluegene) have implemented.

Bug 5077.

1. Identifies nodes which are unavailable to a specific job,
adding a call to filter_by_node_owner() in select_nodes()
 where the node list is generated.
2. Removes the "unavail_node_str" argument to select_nodes()
as it is no longer useful. This string originally was originally
generated once at the start of the job scheduling logic for all jobs,
but since each job can have a different set of
 unavailable nodes (dedicated to user, group, etc.)
so the same string for all jobs can be misleading.

Bug 4932.

See commit 0dabf4e7.
Bug 4932.

regression from ef1f3e73.
Bug 4885.

over any other nodes.

Bug 4968

allocated time than 100% (Flex reservations).

Bug 4968

Bug 4968

bug 4968

In configurator.html web pages change default configuration from
    task/none to task/affinity plugin and from select/linear plugin to
    select/cons_res plus CR_Core.

Bug 4952.

Bug 5011.

If an update for a job that is being requeued[hold] happens, we don't want
to modify the start_time of the old record. Pending + Completing is
equivalent to Requeue.

Bug 4855.

Missed from 500e23b5

Bug 4988

job_ptr was still being referenced after releasing the read locks. Also
prolog_running_decr() needs to have a job write lock and a fed read
lock.

Bug 4947

Bug 4990.

While restarting slurmctld with -R flag, features were emptied.
This patch just does nothing when recover=2 (-R) which means active and
available features are preserved from the state files. Needed for
backup slurmctld controller.

Bug 4927

Bug 4882

If block_map_size is zero (as seen on FreeBSD when not using HWLOC),
xmalloc(0) will return NULL. Writing to str[0] then is invalid.

Bug 4845.

Bug 4971