If an existing file is moved to a new directory that is deleted before the record, record the deletion

Dependencies

• [2] SXEYMYF7 Fixing the bad changes in history (unfortunately, by rebooting).
• [3] R3H7D42U Debugging `pijul git`: proper error reporting
• [4] I52XSRUH Massive cleanup, and simplification

Change contents

• replacement in libpijul/src/record.rs at line 407
  [2.504146]→[2.504146:504205](∅→∅)
  − txn.get_revtree(inode, None).is_none()
  [2.504146]

  [2.504205]
  + if let Some(path) = crate::fs::inode_filename(txn, inode) {

  + working_copy.file_metadata(&path).is_err()

  + } else {

  + true

  + }