[newlib-cygwin/main] Cygwin: document posix_close

[Corinna Vinschen]

https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=2164981d267513dc3049675bd5dada04eac1bc8f

commit 2164981d267513dc3049675bd5dada04eac1bc8f
Author:     Corinna Vinschen <corinna@vinschen.de>
AuthorDate: Tue Feb 25 15:36:24 2025 +0100
Commit:     Corinna Vinschen <corinna@vinschen.de>
CommitDate: Wed Feb 26 09:45:04 2025 +0100

    Cygwin: document posix_close
    
    Reported-by: Christian Franke <Christian.Franke@t-online.de>
    Signed-off-by: Corinna Vinschen <corinna@vinschen.de>

Diff:
---
 winsup/cygwin/release/3.6.0 | 2 ++
 winsup/doc/new-features.xml | 4 ++++
 2 files changed, 6 insertions(+)

diff --git a/winsup/cygwin/release/3.6.0 b/winsup/cygwin/release/3.6.0
index f749abfdc8df..00cf8753cd49 100644
--- a/winsup/cygwin/release/3.6.0
+++ b/winsup/cygwin/release/3.6.0
@@ -11,6 +11,8 @@ What's new:
 
 - New API calls: tcgetwinsize, tcsetwinsize.
 
+- New API call: posix_close.
+
 - New POSIX-defined entry points posix_spawn_file_actions_addchdir and
   posix_spawn_file_actions_addfchdir.  These are the same as the already
   exported posix_spawn_file_actions_addchdir_np and
diff --git a/winsup/doc/new-features.xml b/winsup/doc/new-features.xml
index 0a64d2138b15..7ae414c9264d 100644
--- a/winsup/doc/new-features.xml
+++ b/winsup/doc/new-features.xml
@@ -32,6 +32,10 @@ New API call: timespec_get.
 New API calls: tcgetwinsize, tcsetwinsize.
 </para></listitem>
 
+<listitem><para>
+New API call: posix_close.
+</para></listitem>
+
 <listitem><para>
 New POSIX-defined entry points posix_spawn_file_actions_addchdir and
 posix_spawn_file_actions_addfchdir.  These are the same as the already