Exclude signal handler from linux crashlogs#5672

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NicksWorld wants to merge 2 commits intoDFHack:developfrom

NicksWorld:crashlog/hide_signal_handler

Commits on Nov 30, 2025

Ensure the dfhack signal handler doesn't appear in crashlogs
NicksWorld
committed

Commits on Dec 4, 2025

Make a failure to obtain relevant crash backtrace obvious
NicksWorld
committed