[e-acsl] update oracles

src/plugins/e-acsl/tests/arith/oracle/arith.res.oracle

src/plugins/e-acsl/tests/arith/oracle/array.res.oracle

...ests/arith/oracle/at_on-purely-logic-variables.res.oracle

src/plugins/e-acsl/tests/arith/oracle/bitwise.res.oracle

src/plugins/e-acsl/tests/arith/oracle/gen_arith.c

src/plugins/e-acsl/tests/arith/oracle/gen_array.c

src/plugins/e-acsl/tests/arith/oracle/gen_at.c

...csl/tests/arith/oracle/gen_at_on-purely-logic-variables.c

src/plugins/e-acsl/tests/arith/oracle/gen_bitwise.c

...gins/e-acsl/tests/arith/oracle/gen_extended_quantifiers.c

src/plugins/e-acsl/tests/arith/oracle/gen_functions.c

src/plugins/e-acsl/tests/arith/oracle/gen_functions_rec.c

src/plugins/e-acsl/tests/arith/oracle/gen_let.c

src/plugins/e-acsl/tests/arith/oracle/gen_longlong.c

src/plugins/e-acsl/tests/arith/oracle/gen_rationals.c

src/plugins/e-acsl/tests/arith/oracle/let.res.oracle

src/plugins/e-acsl/tests/arith/oracle/rationals.res.oracle

src/plugins/e-acsl/tests/bts/oracle/bts1326.res.oracle

src/plugins/e-acsl/tests/bts/oracle/bts2231.res.oracle

src/plugins/e-acsl/tests/bts/oracle/gen_bts1304.c