cython: terms.pyx: wrap term functions 4
cython: terms.pyx: wrap term functions 4

- wrap dw_lin_elastic_iso(), dw_lin_elastic(), d_lin_elastic(),
dw_lin_prestress(), dw_lin_strain_fib(), de_cauchy_strain(),
de_cauchy_stress(), dq_cauchy_strain(), dw_surface_ltr(),
dw_volume_lvf(), dw_mass(), dw_mass_scalar(), d_mass_scalar(),
dw_surf_mass_scalar()

sfepy/sfepy,lokik/sfepy,RexFuzzle/sfepy,BubuLK/sfepy,vlukes/sfepy,sfepy/sfepy,sfepy/sfepy,BubuLK/sfepy,RexFuzzle/sfepy,vlukes/sfepy,BubuLK/sfepy,rc/sfepy,lokik/sfepy,vlukes/sfepy,RexFuzzle/sfepy,lokik/sfepy,RexFuzzle/sfepy,lokik/sfepy,rc/sfepy,rc/sfepy