comparison tests/test-hgweb-json.t @ 47017:da4e6d7a8fdd

help: add topic about evolution, based on text from evolve extension

I've taken the text produced by `hg help evolution` when the evolve
extension is enabled and made that available by the same command with
just hg core. Changes I've made:

 * Added "(EXPERIMENTAL)" to the title. (That doesn't hide the topic
   from `hg help`, though.)

 * Replaced old-style `experimental.evolution=<names>` config by
   new-style `experimental.evolution.<name>=true`.

 * Replaces a "obsolete markers" by "obsolescence markers".

 * Removed most content from "Current feature status".

When the evolve extension is enabled, its help text takes precedence.

Differential Revision: https://phab.mercurial-scm.org/D10516

47016:8ad2f43fe37b

      {
        "summary": "Environment Variables",
        "topic": "environment"
      },
      {
        "summary": "Using Additional Features",
        "topic": "extensions"
      },
      {
        "summary": "Specifying File Sets",

47017:da4e6d7a8fdd

      {
        "summary": "Environment Variables",
        "topic": "environment"
      },
      {
        "summary": "Safely rewriting history (EXPERIMENTAL)",
        "topic": "evolution"
      },
      {
        "summary": "Using Additional Features",
        "topic": "extensions"
      },
      {
        "summary": "Specifying File Sets",