Fix a couple of old bugs.

the tests to use this function.

Fix test1.36 to avoid launch more than 16 tasks on one node on AIX.

globals.

Convert all of the tests over to using make_bash_script.

Add new globals functions "available_nodes" and "default_partition".

places on different systems.

srun command.

global conf->node_name string.

added some bgl specs back into the job_desc_msg_t so lcrm can use bgl specs for job creation.  Also changed all slurm_auth_cred's to auth_cred instead of just cred.