[newlib-cygwin/main] Cygwin: add newgrp(1) to release message for 3.5.0

[Corinna Vinschen <corinna@sourceware.org>]

https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=62b9c98f12ff58e870ac42d2cd1b6860bf371ae0

commit 62b9c98f12ff58e870ac42d2cd1b6860bf371ae0
Author:     Corinna Vinschen <corinna@vinschen.de>
AuthorDate: Sat Jan 14 18:00:35 2023 +0100
Commit:     Corinna Vinschen <corinna@vinschen.de>
CommitDate: Sat Jan 14 18:00:35 2023 +0100

    Cygwin: add newgrp(1) to release message for 3.5.0
    
    Signed-off-by: Corinna Vinschen <corinna@vinschen.de>

Diff:
---
 winsup/cygwin/release/3.5.0 |  2 ++
 winsup/doc/new-features.xml | 22 ++++++++++++++++++++++
 2 files changed, 24 insertions(+)

diff --git a/winsup/cygwin/release/3.5.0 b/winsup/cygwin/release/3.5.0
index bc6365993623..32c9ebaac487 100644
--- a/winsup/cygwin/release/3.5.0
+++ b/winsup/cygwin/release/3.5.0
@@ -6,3 +6,5 @@ What's new:
 - The console device gets accessible from other terminals such as other
   consoles and ptys. Thanks to this new feature, GNU screen and tmux
   now work in the console.
+
+- newgrp(1) tool.
diff --git a/winsup/doc/new-features.xml b/winsup/doc/new-features.xml
index 5c9399e14790..169f0fc5263f 100644
--- a/winsup/doc/new-features.xml
+++ b/winsup/doc/new-features.xml
@@ -4,6 +4,28 @@
 
 <sect1 id="ov-new"><title>What's new and what changed in Cygwin</title>
 
+<sect2 id="ov-new3.5"><title>What's new and what changed in 3.5</title>
+
+<itemizedlist mark="bullet">
+
+<listitem><para>
+Drop support for Windows 7, Windows 8, Server 2008 R2 and Server 2012.
+</para></listitem>
+
+<listitem><para>
+The console device gets accessible from other terminals such as other
+consoles and ptys. Thanks to this new feature, GNU screen and tmux now
+work in the console.
+</para></listitem>
+
+<listitem><para>
+newgrp(1) tool.
+</para></listitem>
+
+</itemizedlist>
+
+</sect2>
+
 <sect2 id="ov-new3.4"><title>What's new and what changed in 3.4</title>
 
 <itemizedlist mark="bullet">