Detect to use strerror_s.

Authored by gniibe on May 29 2019, 4:09 AM.

Description

Detect to use strerror_s.

* configure.ac [mingw32*] (strerror_s): Detect.
* src/strerror.c [HAVE_STRERROR_S] (system_strerror_r): Use strerror_s.
  • GnuPG-bug-id: T4539
  • Signed-off-by: NIIBE Yutaka <gniibe@fsij.org>