Log Message:
blackbox70: update to 0.77 (a minor maintenance release)

Upstream change log:

Brian Bidulock <bidulock@openss7.org> (9):
      post-release update
      improvements to maintenance scripts
      document compliance wider
      Merge pull request #31 from dhgutteridge/master
      update for autoconf 2.71
      update release notes
      update release files
      Merge branch 'master' of github.com:bbidulock/blackboxwm
      update release files

David H. Gutteridge <dhgutteridge@users.noreply.github.com> (1):
      EWMH.cc needs cstdlib to compile on some OSes