Log Message:
blackbox70: update to 0.75 (a minor maintenance release)

pkgsrc-specific changes: we are now using upstream's formal release
archive, which means a configure script is provided, so we aren't
pulling in a bunch of tool dependencies just to generate such.

Change log:

Brian Bidulock <bidulock@openss7.org> (16):
      reformat TODO
      generate NEWS better
      update for gettext 0.20.1 to fix issue #23
      update release notes
      generate NOTES and TODO
      place filename last in sed command
      update build process
      have better defaults now
      gcc 9.1 too agressive on array-bounds warnings
      ignore release products
      generate release notes on dist
      handle annotated tags better when generating NEWS
      update po files
      ignore lz files
      update release files
      update release files