• remove old documentation as part of optional documentation to install
  • docs from 2006 (probably out-of-date)
• pet portlint
• bump portrevision

Old docs are still accessible here:
https://people.freebsd.org/~mezz/distfiles/

M fluxbox/Makefile
M fluxbox/distinfo
M fluxbox/files/patch-util_fbsetbg