Merge branch 'jk/eoo' into next

The command line parser learned "--end-of-options" notation; the
standard convention for scripters to have hardcoded set of options
first on the command line, and force the command to treat end-user
input as non-options, has been to use "--" as the delimiter, but
that would not work for commands that use "--" as a delimiter
between revs and pathspec.

* jk/eoo:
  gitcli: document --end-of-options
  parse-options: allow --end-of-options as a synonym for "--"
  revision: allow --end-of-options to end option parsing