man page has registry options mixed with other options

[Alexander Belchenko]

Man page generator don't use new form of optparse-based help for options variants. E.g. help on log options looks like:

Options:
  -v, --verbose show files changed in each revision
  -h, --help show help message
  --forward show from oldest to newest
  --timezone=ARG display timezone as local, original, or utc
  --show-ids show internal object ids
  -m ARG, --message=ARG
                        show revisions whose message matches this regexp
  -r ARG, --revision=ARG
                        See 'help revisionspec' for details

  Log format:
    --log-format=ARG Use this log format
    --html
    --line Log format with one line per revision
    --long Detailed log format
    --short Moderately short log format

But in man page available log formats is spread along other options. This need to be reworked.

Also, similar functions of autodoc_man.py and autodoc_rstx.py should not be doubled. DRY?