hash: deprecate poorly-named hash_insert0: use hash_insert_if_absent * lib/hash.c (hash_insert_if_absent): Rename from hash_insert0. Add a sentence to the comment. (hash_insert0): New function that simply calls hash_insert_if_absent. * lib/hash.h (hash_insert_if_absent): Declare it. (hash_insert0): Add deprecation attribute. (_GL_ATTRIBUTE_DEPRECATED): Define. * lib/di-set.c (di_set_insert): Use hash_insert_if_absent, not hash_insert0. * NEWS: Mention it, even though it's not really an incompatible change Prompted by a question from Matthew Booth <mbooth@redhat.com>.

--- a/lib/di-set.c
+++ b/lib/di-set.c
@@ -233,7 +233,7 @@
     return -1;
 
   /* Put I into the inode set.  */
-  return hash_insert0 (ino_set, (void const *) i, NULL);
+  return hash_insert_if_absent (ino_set, (void const *) i, NULL);
 }
 
 /* Look up the DEV,INO pair in the set DIS.