Move final file if in same file system, not only in same directory

[aydreas]

Use std::filesystem::equivalent instead of just comparing the parent directories to determine if tmp_2_file can be moved. Prevents useless IO activity and speeds up plotting if temp_2_file and final_file are in the same file system.

[aqk]

Hello - thanks for your fix. We do want to move to C++ stdlib calls, but have had to move slowly because of the number of platforms we support.

@wjblanke will this work on the oldest macos we currently support?

[wjblanke]

Hello - thanks for your fix. We do want to move to C++ stdlib calls, but have had to move slowly because of the number of platforms we support.

@wjblanke will this work on the oldest macos we currently support?

I think the question is whether Gulrak supports it. If it is compiling on MacOS should be OK

[hoffmang9]

Also note there is an update to Gulrak - https://github.com/Chia-Network/chiapos/pull/259

[github-actions[bot]]

'This PR has been flagged as stale due to no activity for over 60 days. It will not be automatically closed, but it has been given a stale-pr label and should be manually reviewed.'