bug#32452: 26.1; gnutls_try_handshake maxes out cpu retrying when server is a bit busy

[Eli Zaretskii]

> From: Lars Ingebrigtsen <larsi@gnus.org>
> Cc: bug-gnulib@gnu.org,  npostavs@gmail.com,  32452@debbugs.gnu.org,  Eli
>  Zaretskii <eliz@gnu.org>
> Date: Thu, 03 Mar 2022 14:49:18 +0100
> 
> Eli, here's the proposed complete patch to do some sleeping in
> gnutls_try_handshake.  Does it work on Windows for you?

It does, after I make these 2 additional changes:

diff --git a/nt/gnulib-cfg.mk b/nt/gnulib-cfg.mk
index 4748474..69119b1 100644
--- a/nt/gnulib-cfg.mk
+++ b/nt/gnulib-cfg.mk
@@ -74,3 +74,4 @@ OMIT_GNULIB_MODULE_futimens =
 OMIT_GNULIB_MODULE_utimensat = true
 OMIT_GNULIB_MODULE_file-has-acl = true
 OMIT_GNULIB_MODULE_nproc = true
+OMIT_GNULIB_MODULE_nanosleep = true
diff --git a/nt/mingw-cfg.site b/nt/mingw-cfg.site
index 6ab81e9..7ca19cb 100644
--- a/nt/mingw-cfg.site
+++ b/nt/mingw-cfg.site
@@ -167,3 +167,6 @@ ac_cv_func_strsignal=no
 # implementation of 'free' doesn't touch errno, and it emits a
 # compilation warning.
 gl_cv_func_free_preserves_errno=yes
+# Don't build the Gnulib nanosleep module: it requires W2K or later,
+# and MinGW does have nanosleep.
+gl_cv_func_nanosleep=yes