doc: add NEWS entry for recent cksum change

* NEWS (Changes in behavior): Add entry for commit v9.0-92-ga42a03913.

diff --git a/NEWS b/NEWS
index 711f7811a05aca4b6803e73c40371c930acfac39..a4ba0fce6abf2950c40df109b23ce507a2ea126d 100644 (file)
--- a/NEWS
+++ b/NEWS
@@ -38,6 +38,9 @@ GNU coreutils NEWS                                    -*- outline -*-
   simple copies between regular files.  This may be more efficient, by avoiding
   user space copies, and possibly employing copy offloading or reflinking.
 
+  cksum no longer allows abbreviated algorithm names,
+  so that forward compatibility and robustness is improved.
+
   date +'%-N' now suppresses excess trailing digits, instead of always
   padding them with zeros to 9 digits.  It uses clock_getres and
   clock_gettime to infer the clock resolution.