Permissions in archives (since we do not store full permissions anymore)

Dependencies

• [2] VYHHOEYH Versions and formatting
• [3] 3AMEP2Y5 More convenient interface for channels
• [4] SECWDBUH Adding empty directories to archives
• [5] CCLLB7OI Upgrading to Sanakirja 0.15 + version bump
• [6] I3OVP3NH Archive: set the accurate and deterministic mtime
• [7] GHO6DWPI Refactoring iterators
• [8] SXEYMYF7 Fixing the bad changes in history (unfortunately, by rebooting).

Change contents

• replacement in libpijul/src/output/archive.rs at line 229
  [3.763]→[2.1073:1166](∅→∅)
  − arch.create_dir(&path, latest_touch, output_item.meta.permissions())
  [3.763]

  [2.1166]
  + arch.create_dir(&path, latest_touch, 0o755)
• edit in libpijul/src/output/archive.rs at line 235
  [3.5369]

  [3.1276]
  + let perms = if output_item.meta.permissions() & 0o100 != 0 { 0o755 } else { 0o644 };
• replacement in libpijul/src/output/archive.rs at line 237
  [3.1308]→[3.1308:1403](∅→∅)
  − arch.create_file(&path, latest_touch, output_item.meta.permissions());
  [3.1308]

  [3.695503]
  + arch.create_file(&path, latest_touch, perms);