Adjust test oracles as per changes in the Frama-C output

src/plugins/e-acsl/tests/bts/oracle/bts1837.res.oracle

...ns/e-acsl/tests/e-acsl-runtime/oracle/freeable.res.oracle

...e-acsl/tests/e-acsl-runtime/oracle/initialized.res.oracle

...lugins/e-acsl/tests/e-acsl-runtime/oracle/loop.res.oracle

...ns/e-acsl/tests/e-acsl-runtime/oracle/mainargs.res.oracle

...ugins/e-acsl/tests/e-acsl-runtime/oracle/valid.res.oracle

...e-acsl/tests/e-acsl-runtime/oracle/valid_alias.res.oracle

.../tests/e-acsl-runtime/oracle/valid_in_contract.res.oracle

...gins/e-acsl/tests/e-acsl-runtime/oracle/vector.res.oracle

src/plugins/e-acsl/tests/gmp/oracle/arith.0.res.oracle

src/plugins/e-acsl/tests/gmp/oracle/longlong.0.res.oracle

src/plugins/e-acsl/tests/gmp/oracle/longlong.1.res.oracle