hdf5_der

Merge pull request #975 in HDFFV/hdf5 from develop to hdf5_1_10_2

* commit '2f0566208ed0e5b654e619df6f9d7ebee16a0bd4':
  Updated RELEASE.txt Description:     Wrappers for H5Tencode and H5Tdecode     No code change.
  Fixed HDFFV-10151 Description:     Added a document to the HDF5 C++ API Reference Manual to show the     mapping from a C API to C++ wrappers.
  Fix memory leak simply by capturing allocation in var
  Change max value
  Chnage values so test will fail when new latest is added
  Exception changed
  Exception type changed
  Correct constant var names
  Java constants for new lib verbounds values