Merge branch 'fix/andre/libc-extern-ghost' into 'master'

...ugins/e-acsl/tests/full-mmodel/oracle/addrOf.0.res.oracle

...ugins/e-acsl/tests/full-mmodel/oracle/addrOf.1.res.oracle

src/plugins/e-acsl/tests/full-mmodel/oracle/gen_addrOf2.c

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

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

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

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

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

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

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

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

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

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

...ins/e-acsl/tests/gmp/oracle/integer_constant.0.res.oracle

...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.0.res.oracle

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

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