Evaluated neutron cross section data directory
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   authors A.Ivanchenko & V.Ivanchenko
        (revison 8 February 2013)

Evaluated cross section data for natuaral composition of elements 

-- elastZ   - elastic 
-- inelastZ - inelastic
-- catZ     - capture

Data for selected isotopes

-- inelastZ_A - inelastic
-- capZ_A     - capture

Add data format is G4VPhysicsVector compatible

These data are used by neutron cross section classes G4NeutronCaptureXS,
G4NeutronElasticXS, G4NeutronInelasticXS
