rename octave::build_env namespace from octave::config * build-env-features.sh: Rename from ocgt-conf-features.sh. Update for new names. * build-env.h: Rename from oct-conf.h. Also declare features function. * build-env.in.cc: Rename from oct-conf.in.cc. * oct-conf-features.h: Delete. * libinterp/module.mk: Update. * toplev.cc, __init_gnuplot__.cc, octave.cc: Update for new names.

#include <octave/oct.h>

DEFUN_DLD (addtwomatrices, args, , "Add A to B")
{
  if (args.length () != 2)
    print_usage ();

  NDArray A = args(0).array_value ();
  NDArray B = args(1).array_value ();

  return octave_value (A + B);
}