[PATCH 5/7] lib-sieve: file storage: Remove orphan compiled binaries on delete and...

[PATCH 5/7] lib-sieve: file storage: Remove orphan compiled binaries on delete and rename

DELETESCRIPT and RENAMESCRIPT only operated on the .sieve file and
left the matching compiled binary (.svbin) on disk. The orphan was
never referenced again under that name, so it accumulated as wasted
disk space until something else (manual cleanup, account removal)
removed it.

Unlink fscript->bin_path alongside the .sieve operation. The unlink is
best-effort: failures other than ENOENT are logged but do not fail the
DELETE/RENAME.

Gbp-Pq: Name 0005-lib-sieve-file-storage-Remove-orphan-compiled-binari.patch