value (due to uint32_t conversion) in sprio. Helpful
            when fine-tuning weight parameters.

sprio: print overall priority value even if it is less than 0

With some combinations of component values and low weight factors, it can happen that the
priority computed by the priority/multifactor plugin lies below 0 (and would be rounded
up to 2).

When this condition happens, the negative values are difficult to interpret and can give
the wrong impression that the resulting priority is very large (due to the conversion
into a large unsigned number). 

In our tests we found it more helpful to display the negative priority value: a user can
know that SLURM does not use negative values, having the absolute value gives a better
indication how much weight to add to the other factors so that the overall priority
centers around 0.

Before:
  JOBID     USER   PRIORITY        AGE  FAIRSHARE    JOBSIZE  PARTITION        QOS   NICE
   9968   sukysj       8955        218          0        236          0          0  -8500
  10065   amsmax 4294957826          9          0        340          0          0   9821
  10066   amsmax 4294957826          9          0        340          0          0   9821
  10067   amsmax 4294957826          9          0        340          0          0   9821
  10068   amsmax 4294957826          9          0        340          0          0   9821
  10069   amsmax 4294957826          9          0        340          0          0   9821
  10070   amsmax 4294957826          9          0        340          0          0   9821

After:
  JOBID     USER   PRIORITY        AGE  FAIRSHARE    JOBSIZE  PARTITION        QOS   NICE
   9968   sukysj       8955        218          0        236          0          0  -8500
  10065   amsmax      -9470          9          0        340          0          0   9821
  10066   amsmax      -9470          9          0        340          0          0   9821
  10067   amsmax      -9470          9          0        340          0          0   9821
  10068   amsmax      -9470          9          0        340          0          0   9821
  10069   amsmax      -9470          9          0        340          0          0   9821
  10070   amsmax      -9470          9          0        340          0          0   9821

            set directly (since the priority factor fields are 0).


i
rity/multifactor: skip jobs whose priority has been set directly

This avoids displaying "house numbers" in sprio if the priority has been
set directly, as in the following example for aghasemi (whose group is a
"bottom-feeder" with a fixed priority of 10):

palu> squeue
JOBID  USER     ACCOUNT           NAME PARTITION ST REASON     START_TIME           TIME  TIME_LEFT NODES   PRIORITY
6971   robinson g13               cp2k       day PD Resources  2011-03-16T13:09     0:00      40:00    35      10327
6983   rpopescu s190              bash       day PD Resources  N/A                  0:00    1:00:00     1       8254
6958   aghasemi s142         poslow007       day PD Priority   2011-03-16T15:28     0:00    1:00:00   108         10

palu> sprio
 JOBID     USER   PRIORITY        AGE  FAIRSHARE    JOBSIZE  PARTITION        QOS   NICE
  6958 aghasemi      10000          0          0          0          0          0 -10000
  6964 rpopescu       8353         71          0         56          0          0  -8225
  6971 robinson      10327         63          0       1988          0          0  -8276
  ...

            this is ongoing, whenever I see something, I add it
            to such a patch.

passthrough nodes (the new bit). Sort by
1. Count of full dimensions (higher is better), then
2. Number of passthrough nodes (lower is better)

    user if the limit is not infinite.

    Patch from Hongjia Cao, NUDT.

Load the apkill value from cray.conf even on alps emulated systems

Added --with-alps-emulation to configure, and also an optional cray.conf to setup alps location and database information.

             child process, to avoid interactions with network
             sockets and file descriptors in use by the slurmctld.

            perform admissibility checks when e.g. moving a pending job into a restricted
            partition to which the user has access).

            correspondence with Ben - to me this now looks much similar to the way the
            SGI pagg IDs are used on Cray:
            * upper part = node_id       (corresponding to alloc_node)
            * lower part = 32 bit job ID (corresponding to alloc_sid)

            of patches #17 and #18.

            meant to pass the signal on to the plugin, along with the job_ptr, so that
            the plugin can take signal-dependent actions. In the case of select/cray 
            this is to forward the signal to the remote aprun invocations using apkill
            (implemented in subsequent patch #20).

            separates (a) signalling job steps from (b) cleaning up reservations.
            The former is used by subsequent patches for a better job_signal() on Cray.

If ALPS directory is explicitly set, then assume it's a Cray system.

better error handling, we need to make sure we add blocks to the list before starting the real time server or we could miss things on start up

BLUEGENE - fixed bug where the usage of a node could get the incorrect usage when adding it from another node when only using it for passthrough

to use select_g_job_expand_allow() instead

 -- Add support for jobs to expand in size. Submit additional batch job with
    the option "--dependency=expand:<jobid>". See web page "faq.html#job_size"
    for details. Restrictions to be removed in the future.

extern bool select_p_job_expand_allow(void);
Now only true for select/linear