more clobber-detection

include/mextra.h

@@ -183,6 +183,7 @@ struct edog {
 };
 
 struct former_incarnation {
+    unsigned parentmid;       /* make clobber-detection possible */
     char rank[25];            /* for bones' ghost rank in their former life */
 };
 

include/patchlevel.h

@@ -17,7 +17,7 @@
  * Incrementing EDITLEVEL can be used to force invalidation of old bones
  * and save files.
  */
-#define EDITLEVEL 116
+#define EDITLEVEL 117
 
 /*
  * Development status possibilities.

src/makemon.c

@@ -1080,6 +1080,7 @@ newformer(struct monst *mtmp)
                         sizeof(struct former_incarnation *));
         (void) memset((genericptr_t) FORMER(mtmp), 0,
                       sizeof(struct former_incarnation *));
+        FORMER(mtmp)->parentmid = mtmp->m_id;
     }
 }