Log Message:
(math/R-RNetCDF) Updated 2.6.2 5o 2.9.1, make test does not pass

Version 2.9-1, 2023-12-30
  * Fix support for parallel I/O with MPICH (and related MPI variants)
  * Fix error handlers to remove potentially insecure format strings

Version 2.8-1, 2023-10-21
  * Fix builds on platforms where share directory is not under $R_HOME
  * Fix UBSAN warning when converting empty NC_CHAR to R string
  * Fix type conversions with oneAPI compiler

Version 2.7-1, 2023-10-02
  * Fix crash when calling nc_free_vlen on vlen with zero-length
  * Support packing and unpacking of vlen
  * Support fill value conversions in non-numeric data types:
    NC_CHAR, NC_STRING, enum, compound, and vlen
  * Improve support for NetCDF parallel I/O in configure script:
    - Specify MPI compiler via argument --with-mpicc
    - Enable MPI tests in R CMD check via argument --with-mpiexec
    - Give warnings if MPI and/or NetCDF parallel I/O not detected
  * Add configure option --with-nc-config-static to allow selection of
    static libraries from nc-config
  * Build Windows package with NetCDF library from RTools4x
    - Adapt to newer RTools by using configure script on Windows
  * Add examples using hierarchical groups to help for grp.inq.nc