doc: clarify an improvement from coreutils-7.0

* NEWS (7.0 Improvements): Mention the command: "ls -1U".
* cfg.mk (old_NEWS_hash): Update.

2 files changed, 3 insertions, 2 deletions

diff --git a/NEWS b/NEWS
index 619fbdd27..d58df26fc 100644
--- a/NEWS
+++ b/NEWS
@@ -1082,7 +1082,8 @@ GNU coreutils NEWS                                    -*- outline -*-
   join has significantly better performance due to better memory management
 
   ls now uses constant memory when not sorting and using one_per_line format,
-  no matter how many files are in a given directory
+  no matter how many files are in a given directory.  I.e., to list a directory
+  with very many files, ls -1U is much more efficient.
 
   od now aligns fields across lines when printing multiple -t
   specifiers, and no longer prints fields that resulted entirely from
diff --git a/cfg.mk b/cfg.mk
index 8a0dc9f70..ce27cf680 100644
--- a/cfg.mk
+++ b/cfg.mk
@@ -27,7 +27,7 @@ bootstrap-tools = autoconf,automake,gnulib,bison
 # Now that we have better tests, make this the default.
 export VERBOSE = yes
 
-old_NEWS_hash = 792b8dca00fe03568653f7ca2d096d9d
+old_NEWS_hash = 7b32bb1296f27ceca68b3a20956cb1b8
 
 # Add an exemption for sc_makefile_at_at_check.
 _makefile_at_at_check_exceptions = ' && !/^cu_install_program =/'