Log Message:
Changes 4.58:
- Some speed optimizations.
- 7-Zip now can unpack .lzma archives.
- Unicode (UTF-8) support for filenames in .ZIP archives.
- Now it's possible to store file creation time in 7z and ZIP archives.
- 7-Zip now can unpack multivolume RAR archives created with
  "old style volume names" scheme and names *.001, *.002, ...
- Some bugs were fixed.