Merge branch 'feature/blanchard/wp/physical-addr' into 'master'

[wp] fix integer/pointer conversion

See merge request frama-c/meta!107

tests/wp-cache/cache/973001fff63e80df9d4235326693e129.json

+{ "prover": "Alt-Ergo:2.5.3", "verdict": "valid", "time": 0.01195,
+  "steps": 62 }

tests/wp-cache/cache/a07939d8b90372280b59dd5ebe5b73df.json

+{ "prover": "Alt-Ergo:2.5.3", "verdict": "valid", "time": 0.018364,
+  "steps": 62 }