Recursively re compresses directories with lzma2 compression:
- Requires 7zip
- Re compresses Zip, BZip2, and GZip to lzma2
- Files inside of compressed files are also re compressed
- Directories that start with a "." are ignored
- All other files are compressed using lzma2
- After compression, files are broken into 10 MB chunks
- --pack re compresses all files, while --unpack changes all files back to normal