Draft: converge(devel): bring call_sponge() routine; add empty pre_init_sponge()...
converge(devel): bring call_sponge() routine; add empty pre_init_sponge() routine; converge slightly interface of sponge() routine
converge(devel): bring call_sponge() routine; add empty pre_init_sponge() routine; converge slightly interface of sponge() routine