Update from libxo-0.8.1 to 0.8.4:

Update from libxo-0.8.1 to 0.8.4:
  0.8.4:
    - void anchor width optimization when we have a custom formatter (https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=221130)
    - make "{[:/18}" do the right thing (also allows "{[:/%s}", wide ? 40 : 10)
    - Can't skip anchor formatting in non-display styles
    - add test case for {[:/18}
    - add upload-xohtml-files to 'make upload'
  0.8.3:
    - xohtml: Add "-w" option to pull support files from gh_pages
    - Add "upload-xohtml-files" target to publish support files in gh_pages/
    - add HISTORY/AUTHORS section to man pages
  0.8.2:
    - xohtml: Add div.units as standard CSS text
    - Don't treat values as format strings; they are not
    - add "-p" to "mkdir -p build" in setup.sh
    - add test case for {U:%%} (from df.c)
    - detect end-of-string in '%' and '' escaping
    - make xo_simple_field, for common simple cases
    - xohtml: nuke "n" in "echo" commands
    - rename "format" to "fmt" for consistency; same for "str" to "value"

Submitted by:	phil