[typing] infer type of intervals wrt context: reduce the number of generated casts

src/plugins/e-acsl/new_typing.ml

src/plugins/e-acsl/new_typing.mli

src/plugins/e-acsl/quantif.ml

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

...lugins/e-acsl/tests/e-acsl-runtime/oracle/gen_base_addr.c

...ins/e-acsl/tests/e-acsl-runtime/oracle/gen_block_length.c

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

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

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

src/plugins/e-acsl/tests/gmp/oracle/gen_comparison2.c

src/plugins/e-acsl/tests/gmp/oracle/gen_integer_constant2.c

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

src/plugins/e-acsl/tests/gmp/oracle/gen_longlong2.c

src/plugins/e-acsl/tests/gmp/oracle/gen_not2.c

...ins/e-acsl/tests/gmp/oracle/integer_constant.1.res.oracle

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

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

src/plugins/e-acsl/tests/gmp/oracle/not.1.res.oracle

src/plugins/e-acsl/translate.ml