Merge topic 'doc-log'

d03bb13839 Help: version 3.16 added cmake --log-level

Acked-by: Kitware Robot <[email protected]>
Merge-request: !9711

Help/manual/cmake.1.rst

@@ -268,6 +268,8 @@ Options
 
 .. option:: --log-level=<level>
 
+ .. versionadded:: 3.16
+
  Set the log ``<level>``.
 
  The :command:`message` command will only output messages of the specified