Log Message:
Update mc to 4.8.22.

Major changes since 4.8.21

Core

  - Support BTRFS's file clone operation (#1983)
  - Find file: show pattern and content in the results window title (#3453)
  - Find file: remember state (empty or not) of Content field (#3924)
  - Improve support IBM i (#3927)
  - Improve handling of hard link creation errors (#3678)
  - Support user-defined prompt in the Fish subshell (#3944)

VFS

  - sftp: preserve atime and mtime (#3917)

Editor

  - man page cleanup (#3918)
  - syntax:
      - PHP - highlight keyword 'null' (#3920)
      - Meson - initial implementation (#3940)

Misc

  - ext.d: use MPV as a fallback for mplayer -identify (#3919)
  - ext.d: improve recognition of MS Office formats (#3929)
  - Code cleanup (#3915)
  - Cleanup hint files

Fixes

  - Won't compile for Apple (#3930)
  - "Cannot create target file" when target has backslash space in the \ 
name (#
    3923)
  - Quiet single file overwrite (#3908)
  - Show error message for each not-installed program when view documents in MS
    Word and Excel formats (#3926)
  - Crash when trying some sftp connections (#3937)
  - Crash when return to filemanager from subshell (#3943)