HDF5 bug fix for vol-async and compression

[houjun]

Summary

• Fix a couple of issues with vol-async and SZ compression, regular HDF5 I/O should not be affected.
• Changed BL_USE_MPI to AMREX_USE_MPI.

Additional background

Checklist

The proposed changes:

• fix a bug or incorrect behavior in AMReX
• add new capabilities to AMReX
• changes answers in the test suite to more than roundoff level
• are likely to significantly affect the results of downstream AMReX users
• include documentation in the code and/or rst files, if appropriate

[atmyers]

Does it makes sense to leave the Summit one in, but commented out?

Also, are these available for everyone to use, or do you need access to geo130?

[houjun]

Just added the Summit paths that are commented out.
Everyone should be able to access the "world-shared" locations on both Summit and Frontier.