some easy constructs (cast*, align*, addrOf)

src/plugins/e-acsl/tests/e-acsl-runtime/addrOf.i

src/plugins/e-acsl/tests/e-acsl-runtime/cast.i

...gins/e-acsl/tests/e-acsl-runtime/oracle/addrOf.err.oracle

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

...lugins/e-acsl/tests/e-acsl-runtime/oracle/cast.err.oracle

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

...gins/e-acsl/tests/e-acsl-runtime/oracle/sizeof.err.oracle

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

src/plugins/e-acsl/tests/e-acsl-runtime/sizeof.i

src/plugins/e-acsl/visit.ml