patch 7.4.858

Problem:    It's a bit clumsy to execute a command on a list of matches.
Solution:   Add the ":ldo", ":lfdo", ":cdo" and ":cfdo" commands. (Yegappan
            Lakshmanan)

runtime/doc/cmdline.txt

@@ -511,6 +511,8 @@ followed by another Vim command:
     :argdo
     :autocmd
     :bufdo
+    :cdo
+    :cfdo
     :command
     :cscope
     :debug
@@ -521,6 +523,8 @@ followed by another Vim command:
     :help
     :helpfind
     :lcscope
+    :ldo
+    :lfdo
     :make
     :normal
     :perl