* Restore Unix executable bits when extracting zip archives
- SafeZipExtractor._extract_member now chmods each extracted file with the
Unix mode stored in ZipInfo.external_attr (POSIX only, no-op when the
archive carries no Unix attributes, e.g. Windows-authored zips).
- stdlib zipfile never restores permission bits itself; a fix is tracked
upstream at https://github.com/python/cpython/pull/150061.
- Fixes archives with more than one executable losing their exec bit after
extraction, e.g. the bundled JBR inside the Kotlin Language Server
distribution (jbr/bin/java and native libs), which previously only had
its single top-level launcher script chmod'd by the language-server code.
Fixesoraios/serena#2100
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Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
