Additions to da723980

exact or no convert.

This reverts commit 406cb529.

Conflicts:
	NEWS

This works ok up until 1048576M then it will make the divisor
1048576 and when it goes to divide it only does it once instead of 2 times
returning 1G instead of 1T.

We have decided to wait until 15.08 for a no convert option to be added.

Adds some redundant logic, but makes CLANG reported problem go away.

Now that the TRES logic is working, remove vestigial burst buffer
  configuration parameters: JobSizeLimit, UserSizeLimit, PrioBoostAlloc,
  and PrioBoostUse.
Also remove the PrivateData configuration parameter and use a Flag
  value of PrivateData instead.
Stop printing a bunch of configuration parameters that are not
  applicable to the cray plugin (e.g. CreateBuffer script).

job_mgr.c for keeping memory from another job.

acct_policy_job_runnable_post_select to validate TRES like bb and lic

This could probably be moved to the pre_select but this was easy and
quick for the time being.

limits on startup.

instead of always working on the job_ptr->tres_req_array