- Relax the check for GNU incremental TAR detection because the prefix field
might contain binary data.
- Improve performance by factor ~5 and avoid storage requirements for index
reading for gzip compressed archives.
- Improve performance by ~40% and avoid storage requirements for index
writing for gzip compressed archives.
- Improve performance for indexing uncompressed TARs that have been
appended to by only analyzing the new files.
- Fix uncompressed archives having been appended very small files (<10 KiB)
were not detected as changed by default.
- Fix problem triggered by combining --recursive and -P 0 with a recursive bzip2 archive.