Paul Eggert 2bbc58bf0b Support gnulib-style timestamps in checkpoint logs ...

* gnulib.modules: Add nstrftime-limited, time_rz.  Sort.
* src/checkpoint.c: Include <strftime.h>.
(format_checkpoint_string): Use nstrftime instead of strftime.
Also fix an obscure bug on platforms that lack tm_gmtoff+tm_zone by
calling tzalloc on those platforms; if it fails, fall back on gmtime.
Also, use fwrite instead of fprintf, since we typically know the
length already and this gives us a more-accurate byte count
in case there are partial writes.

2025-11-23 09:51:31 -08:00

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