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: eggert@cs.ucla.edu,  npostavs@gmail.com,  32452@debbugs.gnu.org
> Date: Fri, 04 Mar 2022 17:47:48 +0100
> 
> Hm, this led to the emacs-module tests to fail:
> 
>    passed  16/38  mod-test-non-local-exit-throw-test (0.000024 sec)
> ../src/emacs: symbol lookup error: 
> /home/larsi/src/emacs/trunk/test/src/emacs-module-resources/mod-test.so: 
> undefined symbol: rpl_nanosleep
> make[1]: *** [Makefile:176: src/emacs-module-tests.log] Error 127
> 
> Does gnulib changes require updates to the module stuff?

mod-test.c calls nanosleep, so it needs to be linked against libgnu.a,
I think.  (We should have done that to begin with, since mod-test.c
includes config.h and headers that have Gnulib replacements.)