Null implies jobacct_gather/none, and slurmd should not query slurmstepd for
accounting information. Otherwise safe_read will block forever, and successive
calls will max out the thread limit and slurmd will hang.

Bug 2420.

structure.

This is technically incorrect (although usually ignored),
and will cause errors if compiling against slurm.h with -Wpedantic.

Otherwise --nice=0 is (16-bit) NO_VAL, just the same as if
--nice was not set at all. Allows for job_submit plugins to
distinguish user intent and override. Bug 2415.

Bug 2406

Continuations of a0bb9c1e and 4b0fc9e8

bug 2407

bug 2408

qalter and qrerun have wrong end-of-line encoding: \r\n rather than \n.

To fix it, please run
sed -e 's/\r$//' -i contribs/torque/qalter.pl
sed -e 's/\r$//' -i contribs/torque/qrerun.pl

Note that these two files have different permission (644) compare to other .pl files (755).
bug 2409

Use PRIu64 instead of %ld for uint64_t types (libsh5util_old),
%zu instead of PRIu64 for size_t.

Add macros to fix compatibility for IPv6, deal with
lack of POLLRDHUP on FreeBSD.

Handle difference in cpu affinity APIs in gres.c.

$((10#$SLURM_API_MAJOR)) is bash-specific. replace with portable
${SLURM_API_MAJOR#0} which accomplishes the same thing.

The first forces bash to treat the value as base-10 even with a
leading zero, the second portable format strips a leading zero off.

Also remove checks for sys/termios.h from build system.
Slurm directly includes the POSIX-required <termios.h> already,
and the one use of this conditional is being removed here.

Fixes one of several build errors on FreeBSD.

This fixes a bug introduced in commit a801d264
Whole node resource allocations with REPLACE option were not working.
Detected by test3.14 failure.

Support AuthInfo in slurmdbd.conf that is different from the value in
    slurm.conf.
There is a possible bug in the slurm_get_auth_info function (src/common/slurm_protocol_api.c) that can cause the slurmdbd daemon to look for the AuthInfo parameter in slurm.conf instead of slurmdbd.conf when the auth/munge authentication method is used (AuthType=auth/munge).

Here is the slurmdbd log revealing the problem (debug5() printing were added in the sources) :

slurmdbd: slurmdbd version 15.08.7 started
slurmdbd: debug2: running rollup at Tue Feb 02 14:20:14 2016
slurmdbd: debug5: in ../../../src/slurmdbd/slurmdbd.c, _send_slurmctld_register_req (line 690)
slurmdbd: debug5: in ../../../src/common/slurm_protocol_api.c, slurm_send_node_msg (line 3601)
slurmdbd: debug5: in ../../../../../src/plugins/auth/munge/auth_munge.c, slurm_auth_create (line 217)
slurmdbd: debug5: in ../../../src/common/slurm_protocol_api.c, slurm_get_auth_ttl (line 1732)
slurmdbd: debug5: Entering ../../../src/common/slurm_protocol_api.c, slurm_get_auth_info
slurmdbd: debug:  Reading slurm.conf file: /usr/local/slurm-15-08-7-1/etc/slurm.conf
slurmdbd: error: s_p_parse_file: unable to status file /usr/local/slurm-15-08-7-1/etc/slurm.conf: No such file or directory, retrying in 1sec up to 60sec
...

Then 60 seconds later, the auth_info value returned by slurm_get_auth_info is NULL:

slurmdbd: debug5: Leaving ../../../src/common/slurm_protocol_api.c, slurm_get_auth_info, auth_info=(null)

and slurmdbd continues without crashing, but I am not sure it is in a safe state.

When applying this patch :

diff --git a/src/common/slurm_protocol_api.c b/src/common/slurm_protocol_api.c
index c5db879..be1dab6 100644
--- a/src/common/slurm_protocol_api.c
+++ b/src/common/slurm_protocol_api.c
@@ -1703,9 +1703,13 @@ extern char *slurm_get_auth_info(void)
        char *auth_info;
        slurm_ctl_conf_t *conf;

-       conf = slurm_conf_lock();
-       auth_info = xstrdup(conf->authinfo);
-       slurm_conf_unlock();
+       if (slurmdbd_conf) {
+                auth_info = xstrdup(slurmdbd_conf->auth_info);
+        } else {
+               conf = slurm_conf_lock();
+               auth_info = xstrdup(conf->authinfo);
+               slurm_conf_unlock();
+       }

        return auth_info;
 }

the auth_info value is now valid and consistent with the slurmdbd.conf setting:

slurmdbd: slurmdbd version 15.08.7 started
slurmdbd: debug2: running rollup at Tue Feb 02 14:47:37 2016
slurmdbd: debug5: in ../../../src/slurmdbd/slurmdbd.c, _send_slurmctld_register_req (line 690)
slurmdbd: debug5: in ../../../src/common/slurm_protocol_api.c, slurm_send_node_msg (line 3600)
slurmdbd: debug5: in ../../../../../src/plugins/auth/munge/auth_munge.c, slurm_auth_create (line 217)
slurmdbd: debug5: in ../../../src/common/slurm_protocol_api.c, slurm_get_auth_ttl (line 1731)
slurmdbd: debug5: Entering ../../../src/common/slurm_protocol_api.c, slurm_get_auth_info
slurmdbd: debug5: Leaving ../../../src/common/slurm_protocol_api.c, slurm_get_auth_info, auth_info=socket=/var/run/munge/munge_dbd.socket.2

contribs/cray/csm/slurmconfgen_smw.py - avoid erroneously including
repurposed compute nodes in the list of nodes to start slurmd.

When the slurmctld is in background mode, it will issue double
  free calls on the incomming message buffers, likely leading
  an abort.

If an invalid trigger message is received by slurmctld, it could
  result in a non-zero array counter and a NULL element array.
  If the element array is NULL, then clear the counter to avoid
  xfree calls of bad pointers.

Do not automatically relocate an advanced reservation for individual cores
    that spans multiple nodes when nodes in that reservation go down (e.g.
    a 1 core reservation on node "tux1" will be moved if node "tux1" goes
    down, but a reservation containing 2 cores on node "tux1" and 3 cores on
    "tux2" will not be moved node "tux1" goes down). Advanced reservations for
    whole nodes will be moved by default for down nodes.
bug 2326

avoid attempting to execve() a directory with a name that
happens to matching that of the desired command. bug 2392.

Allow an existing reservation with running jobs to be modified without
    Flags=IGNORE_JOBS.
bug 2389

burst_buffer/cray - Increase size of intermediate variable used to store
    buffer byte size read from DW instance from 32 to 64-bits to avoid overflow
    and reporting invalid buffer sizes.
bug 2378

gres types without a File.

to debug3 when trying to find the correct association.

a continuation to commit 87d9370f