-> 2.6 slurmd

This makes it consistent with the value of default_queue_depth.
The backfill scheduler should be able to easily handle this value
(or much higher for pretty much any configuration).

Conflicts:
	src/common/stepd_api.c

Conflicts:
	src/common/read_config.c
	src/plugins/accounting_storage/pgsql/accounting_storage_pgsql.c
	src/plugins/jobcomp/pgsql/jobcomp_pgsql.c
	src/slurmctld/job_mgr.c

could end up before the job started. Bug 371

This function can now be called to test for processes which are
dumping in order to avoid sending them a SIGKILL until dump
completes. Change in logic required for job_container/cray.

Handle invalid process ID better (probably never happens)
Re-arrange logic to eliminate duplicate file close on error

plugins more maintainable.

We now reject jobs with an invalid accounting frequency at
submit time rather than launch time, so the error is slightly
different and the test needs to change for that.

This avoids waiting for the job's initiation to fail.

Only cancel the job.