Log Message:
Update nih to 0.8.0

  nih remove:
    - FIX: -n now works correctly
      Affected versions: 0.7.1-0.7.2

  nih install:
    - FIX: "nih install -n" doesn't change "automatic" flag \ 
anymore
    - new suboption -k for continuing download after failures
    - BUILD_DATE field is included to installed_*.txt files

  New command "nih audit" for checking packages for vulnerabilities

  New command "nih history"

  nih mark:
    - new suboption -A and -U, synonyms to -u and -a respectively
    - if neither -a, -A, -u or -U were specified, markers are output.

  nih list:
    - new suboption -b for outputting packages in the repository
    - new suboption -r for outputting raw package summaries

  nih meta:
    - new suboption -r for outputting raw package summaries

  nih refresh:
    - error message is output when download fails

  Minor improvements in "nih -h" and manual page

  Path to ftp(1) defaults to /usr/bin/ftp on NetBSD, FreeBSD, OpenBSD
  and DragonFlyBSD.  On other systems it defaults to tnftp from
  pkgsrc.

  FTP_OPTIONS and WGET_OPTIONS default to "-4" for using IPv4 only.

  New configuration variable IGNORE_CKSUMS was added in order to
  ignore SHA512.txt absent in some repositories.