Enable file peeking to obtain ROOT storage settings and use them for AthenaMP dispatching.
This is work done by ANL SULI Jason Saunders (saundersj@anl.gov). Similar changes went in to the master as MR!24267.
This is work done by ANL SULI Jason Saunders (saundersj@anl.gov). Similar changes went in to the master as MR!24267.