Fix perl API for sbcast pack job support

contribs/perlapi/libslurm/perl/Slurm.xs

@@ -581,13 +581,15 @@ slurm_sbcast_lookup(slurm_t self, uint32_t job_id, uint32_t step_id)
 	PREINIT:
 		job_sbcast_cred_msg_t *info;
 		int rc;
+		uint32_t pack_job_offset = NO_VAL;
 	CODE:
 		if (self); /* this is needed to avoid a warning about
 			      unused variables.  But if we take slurm_t self
 			      out of the mix Slurm-> doesn't work,
 			      only Slurm::
 			    */
-		rc = slurm_sbcast_lookup(job_id, step_id, &info);
+		rc = slurm_sbcast_lookup(job_id, pack_job_offset, step_id,
+					 &info);
 		if (rc == SLURM_SUCCESS) {
 			RETVAL = newHV();
 			sv_2mortal((SV*)RETVAL);

doc/html/heterogeneous_jobs.shtml

@@ -474,6 +474,8 @@ components of a heterogeneous job.</p>
 
 <p>Heterogeneous jobs are not supported on IBM PE systems.</p>
 
+<p>Slurm's PERL APIs currently do not support heterogeneous jobs.</p>
+
 <h2><a name="sys_admin">System Administrator Information</a></h2>
 
 <p>The job submit plugin is invoked independently for each component of a
@@ -543,13 +545,13 @@ core, socket or node.
 Each component of a heterogeneous job counts as a "job" with respect to
 resource limits.</p>
 
-For example, a user might have a limit of 2 concurrent running jobs and submit
+<p>For example, a user might have a limit of 2 concurrent running jobs and submit
 a heterogeneous job with 3 components.
 Such a situation will have an adverse effect upon scheduling other jobs,
 especially other heterogeneous jobs.</p>
 
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-<p style="text-align:center;">Last modified 24 August 2017</p>
+<p style="text-align:center;">Last modified 25 August 2017</p>
 
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