Merge branch 'ty/move-protect-hfs-ntfs'

Merge branch 'ty/move-protect-hfs-ntfs'

The global configuration variables protect_hfs and protect_ntfs have
been migrated into struct repo_config_values to tie them to
per-repository configuration state.

* ty/move-protect-hfs-ntfs:
  environment: use 'repo->initialized' for repo_protect_hfs() and repo_protect_ntfs()
  environment: move 'protect_hfs' and 'protect_ntfs' into 'repo_config_values'