Vladislav Vaintroub b056ed6d98 MDEV-35891 mtr, Windows - fix multi-process append for stdout and stderr ...

This backports https://github.com/mysql/mysql-server/commit/e2f685972985,
which works around perl issue https://github.com/Perl/perl5/issues/17570

MySQL fix  ensures that FILE_APPEND_DATA is used in redirected
stdout/stderr open flags, rather than FILE_GENERIC_WRITE. Only this gives
lossless append behavior, if multiple processes use the same file.

2025-01-20 17:50:07 +02:00

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