Three macros for the Hadr04 example. They fire 2000 neutrons of
25 meV into a 3 m cube of G4_lAr.

Build Hadr04 as usual:

    cmake (g4 install folder)/share/Geant4/examples/extended/hadronic/Hadr04
    make -j

Then run each macro once per neutron library, pointing G4NEUTRONHPDATA at the
library you want to test:

    ./Hadr04 mac_lar_skip_false.txt
    ./Hadr04 mac_lar_skip_true.txt

    G4NEUTRONHPDATA=/path/to/G4NDL4.7   ./Hadr04 mac_lar_skip_false.txt
    G4NEUTRONHPDATA=/path/to/ENDF-VIII.0 ./Hadr04 mac_lar_skip_false.txt

G4NDL 4.7 comes from https://cern.ch/geant4-data/datasets/G4NDL.4.7.tar.gz and
ENDF/B-VIII.0 from https://nds.iaea.org/geant4/libraries/ENDF-VIII.0.tar.gz .
The IAEA libraries need four folders copied in from a full G4NDL distribution
before Geant4 can use them; their own README says which.

Read the counts off the "List of generated particles" block at the end of the
run. With Geant4 11.3.2 and G4NDL 4.7.1 I get:

    library         skip    Ar-41  Ar-39  Ar-37   S-33  Cl-36
    G4NDL 4.7.1     true      163     78      3   1691     65
    G4NDL 4.7.1     false     163     78      3   1691     65
    G4NDL 4.7       true     1921      2     57      0      0
    G4NDL 4.7       false    1921      2     57      0      0
    ENDF/B-VIII.0   true     1902      2     50      0      0
    ENDF/B-VIII.0   false    1901      2     50      0      0

With 4.7.1 the run also prints six lines of the form

    NeutronHP: /Capture file for Z = 18, A = 38 is not found and NeutronHP will
    use .../G4NDL4.7.1/Capture/CrossSection/18_39_Argon

for Capture, Elastic and Inelastic of both Ar-36 and Ar-38.