update oracles

tests/basic/oracle/cxx_c_link.res.oracle

+[kernel] Parsing cxx_c_link.cpp (external front-end)
+Now output intermediate result
+[kernel] Parsing cxx_c_link.c (with preprocessing)
+/* Generated by Frama-C */
+#include "__fc_alloc_axiomatic.h"
+/*@
+axiomatic dynamic_allocation {
+  predicate is_allocable{L}(ℤ n) 
+    reads __fc_heap_status;
+  
+  axiom never_allocable{L}:
+    ∀ ℤ i; i < 0 ∨ i > 18446744073709551615UL ⇒ ¬is_allocable(i);
+  
+  }
+
+*/
+

tests/basic/oracle/ghost_extern_c.res.oracle

 [kernel] Parsing ghost_extern_c.cpp (external front-end)
 Now output intermediate result
 /* Generated by Frama-C */
-/*@ ghost int _Z7ghost_x; */
+/*@ ghost int ghost_x; */
 int real_x;
-/*@ lemma sync{L}: _Z7ghost_x ≡ real_x;
+/*@ lemma sync{L}: ghost_x ≡ real_x;
  */