hdf5_msb

Merging in latest from upstream (HDFFV/hdf5:refs/heads/hdf5_1_12)

* commit '29efed58a861346be122b1ff0c50741206742322':
  Squashed commit of the token_refactoring branch:
  Add test for reference shutdown issue
  H5R: set app ref when incrementing ref_count on location held by reference (fix HDFFV-10992)