Add notes to Get/SetOption manpage entries [skip appveyor]

Options are stored in an internal data structure defined by the optparse
module, and despite the comments that you can deduce the type from the
command-line option doc, it's not always obvious.  Added an annotation
to the Notes column in an attempt to be more explicit.

Signed-off-by: Mats Wichmann <mats@linux.com>

Author: mwichmann

CHANGES.txt

@@ -104,6 +104,7 @@ RELEASE  VERSION/DATE TO BE FILLED IN LATER
       * Drop old example section from manpage (not a visible change: has been
         commented out since v4.0, when the content moved to the new Cookbook)
       * Reword IMPLICIT_COMMAND_DEPENDENCIES construction variable.
+      * Add info on the type of an option variable to GetOption and SetOption.
 
 
 RELEASE 4.10.1 - Sun, 16 Nov 2025 10:51:57 -0700

RELEASE.txt

@@ -142,9 +142,11 @@ DOCUMENTATION
 
 - Fix typos in preface, Chapter 6, Chapter 9 and Chapter 10 of User Guide
 
-
 - Fix broken links in Chapter 1 of User Guide
 
+* Add info on the type of an option variable to GetOption and SetOption.
+
+
 DEVELOPMENT
 -----------