[wp] add « Unsuccess » line in shell mode

src/plugins/wp/register.ml

...lugins/wp/tests/wp/oracle_qualif/bad_cast_call.res.oracle

...wp/tests/wp/oracle_qualif/default-stmt-assigns.res.oracle

...gins/wp/tests/wp/oracle_qualif/exit_post_scope.res.oracle

...ns/wp/tests/wp/oracle_qualif/stmtcompiler_test.res.oracle

src/plugins/wp/tests/wp/oracle_qualif/wp_behav.0.res.oracle

src/plugins/wp/tests/wp/oracle_qualif/wp_behav.1.res.oracle

src/plugins/wp/tests/wp/oracle_qualif/wp_strategy.res.oracle

...plugins/wp/tests/wp_acsl/oracle_qualif/arith.1.res.oracle

...sl/oracle_qualif/assigned_initialized_memtyped.res.oracle

...acsl/oracle_qualif/assigned_initialized_memvar.res.oracle

...racle_qualif/assigned_not_initialized_memtyped.res.oracle

.../oracle_qualif/assigned_not_initialized_memvar.res.oracle

...wp/tests/wp_acsl/oracle_qualif/assigns_range.1.res.oracle

src/plugins/wp/tests/wp_acsl/oracle_qualif/axioms.res.oracle

...ins/wp/tests/wp_acsl/oracle_qualif/base_offset.res.oracle

...s/wp/tests/wp_acsl/oracle_qualif/bitwise_idemp.res.oracle

src/plugins/wp/tests/wp_acsl/oracle_qualif/checks.res.oracle

...ests/wp_acsl/oracle_qualif/chunk_typing_usable.res.oracle

...lugins/wp/tests/wp_acsl/oracle_qualif/clusters.res.oracle