- select_job_res.[ch] has been renamed job_resources.[ch]

- the select_job_res structure has been renamed job_resources
- all pertinent references to "select_job_res" have been renamed "job_resources"
- the select_job_res_t *select_job member of the slurmctld.h's job_record has
    been renamed job_resources_t *job_resrcs