package produce invalid HPKG file when archiving large folder with a lot of files

[X512]

This is hrev53967.

When creating HPKG file with package create -0 -i /path/to/stub.PackageInfo /path/to/Package.hpkg from folder with a lot of small files and total size about 10GB and then extracting with package extract /path/to/Package.hpkg, extraction fails with Error: Malformed TOC strings section.

If HPKG format has some limitation on file count, creation should fail instead of silently creating invalid HPKG. If there are no limitation, this is a bug and it should be fixed.