git: world: Add <sys/single_threaded.h>

[Rimvydas Jasinskas]

commit 6e42f7e2096165a28bab14a23c399e4b1a8bb531
Author: zrj <rimvydas.jasinskas at gmail.com>
Date:   Tue Dec 15 06:27:09 2020 +0000

    world: Add <sys/single_threaded.h>
    
     The __libc_single_threaded is publicly exported version of libc private
     __isthreaded symbol that does not reset on fork in threaded programs.

Summary of changes:
 lib/libc/gen/Symbol.map                            |  1 +
 lib/libc/stdlib/exit.c                             |  7 ++++++
 lib/libthread_xu/thread/thr_kern.c                 |  3 +++
 .../sys/single_threaded.h                          | 26 +++++++++++++---------
 4 files changed, 26 insertions(+), 11 deletions(-)
 copy lib/libthread_xu/thread/thr_isthreaded_np.c => sys/sys/single_threaded.h (79%)

http://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/6e42f7e2096165a28bab14a23c399e4b1a8bb531


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