[gtk/msvcproj-py3-req: 2/2] README.win32: Mention the possibility of using Python-2.7.x

[Chun-wei Fan <fanchunwei src gnome org>]

commit 896a420da422bfafb209eea13da21eb68e6346c3
Author: Chun-wei Fan <fanchunwei src gnome org>
Date:   Tue May 31 14:10:01 2022 +0800

    README.win32: Mention the possibility of using Python-2.7.x
    
    It is probably still possible with older GLib and GObject-Introspection
    versions, but it is certainly not recommended with the advent of Meson.
    
    One will not be able to re-generate demos.h.win32 (for
    enabling/disabling the Font Features Demo) with Python 2.7.x-Python 3.x
    or PERL must be used.

 README.win32 | 4 ++++
 1 file changed, 4 insertions(+)
---
diff --git a/README.win32 b/README.win32
index 91b8fb2275..704f6f3caf 100644
--- a/README.win32
+++ b/README.win32
@@ -198,6 +198,10 @@ ARM64 build configs by copying the settings from the x64 configs, and then build
 The build instructions for such builds otherwise follow the standard Win32 (x86) and
 x64 builds, but you need to ensure that you have ARM64 builds of the various dependencies.
 
+It may still be possible to carry out the build and build the introspection files with Python 2.7.x
+using older versions of GLib and GObject-Introspection, but please note that this is not recommended
+and one is on his/her own by doing so.
+
 3) Using Meson (for Visual Studio and MinGW builds)
 ---