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/NEWS
+++ b/NEWS
@@ -12,6 +12,10 @@
 
 Date        Modules         Changes
 
+2011-11-18  hash            This module deprecates the hash_insert0 function
+                            using gcc's "deprecated" attribute.  Use the better-
+                            named hash_insert_if_absent equivalent.
+
 2011-11-04  openat          This module no longer provides the mkdirat()
                             function. If you need this function, you now need
                             to request the 'mkdirat' module.