xfs_undelete-12.0-bp156.2.1

- build separate xfs_undelete.changes file
- spec file cleanup
- convert env shebang in spec file

- v12.0 release:
  * added time range function to the -t and -T options
  * bugfix: be less picky about the magic string of deleted inodes

- v11.0 release:
  * added the -T option to limit the files recovered to those
    modified since a given date.
  * bugfix: script failed if LANG was unset
  * added openSUSE and Arch Linux packages link to README
  * markdown and manpage fixes in README
  * manpage fixes

- v10.0 release:
  * added --no-remount-readonly option

- v9.1 release:
  * bugfix: be less picky about mount error messages

- v9.0 release:
  * added -s option for specifying a start inode

- v8.1 release:
  * manpage fixes

- v8.0 release:
  * added automatic trimming of trailing zeroes for certain
    filetypes
  * added support for wildcard file extension and mimetype
    matching

- v7.2 release:
  * allow working as an ordinary user on a previously
    umounted/read-only-mounted filesystem

- v7.1 release:
  * bugfix: added a workaround against a problem with Arch
    Linux' dd

- v7.0 release:
  * added a manpage
  * added more sanity checks on command line parameters
  * added -m option for alternative magic files passed to the
    file utility
  * added -l option for listing understood file extensions
  * changed the -r and -i options to accept comma instead of
    space-separated lists

- v6.2 release:
  * bugfix: agcount wasn't updated from filesystem data

- v6.1 release:
  * fixed progress message

- v6.0 release:
  * added -i and -r options to recover only selected file types;
    skip "bin" files by default
  * agnore all files without any extent starting at loffset
    zero. These are most likely bogus.

- v5.0 release:
  * added guessing the correct file extension; added file deletion
    time to filename

- v4.2 release:
  * bugfix: progress status showed wrong inode number.

- v4.1 release:
  * bugfix: remounting a busy filesystem ro may have failed
    silently and left it rw.

- v4.0 release:
  * achieved a factor 400 speed up by traversing the inode
    B+trees instead of mindlessly checking all filesystem blocks.
  * dropped the -s start block option because of this.

- v3.1 release:
  * bugfix: results of binary scan have to be unsigned values

- v3.0 release:
  * removed dependency on xfs_progs in favour of parsing the
    superblock ourselves.