-  CHANGES IN R 3.6.2:
  NEW FEATURES:
    * runmed(x, *) gains a new option na.action determining _how_ to
      handle NaN or NA in x.
    * dotchart() gains new options ann, xaxt, frame.plot and log.
  INSTALLATION on a UNIX-ALIKE:
    * Detection of the C stack direction has been moved from run-time
      to configure: this is safer with LTO builds and allows the
      detection to be overridden - see file config.site.
    * Source-code changes enable installation on platforms using gcc
      -fno-common (the expected default for gcc 10.x).
  C-LEVEL FACILITIES:
    * installTrChar (which is nowadays is wrapped by installChar) is
      defined in Rinternals.h.  (Neither are part of the API.)
  PACKAGE INSTALLATION:
    * Header Rconfig.h contains the value of FC_LEN_T deduced at
      installation which is used by the prototypes in headers
      R_ext/BLAS.h and R_ext/Lapack.h but to avoid extensive breakage
      this is only exposed when USE_FC_LEN_T is defined.
      If a package's C/C++ calls to BLAS/LAPACK allow for the 'hidden'
      arguments used by most Fortran compilers to pass the lengths of
      Fortran character arguments, define USE_FC_LEN_T and include
      Rconfig.h (possibly _via_ R.h) before including R_ext/BLAS.h or
      R_ext/Lapack.h.
    * A package with Fortran source code and perhaps C (but not C++)
      sources can request for its shared object/DLL to be linked by the
      Fortran compiler by including a line USE_FC_TO_LINK= in
      src/Makevars[.win] and using $(SHLIB_OPENMP_FFLAGS) as part of
      PKG_LIBS.
      The known reason for doing so is a package which uses Fortran

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