Since bookmarks are no longer merged with repo.tags() as of
8e2d23f4bd25, they don't show up in `hg id` as they used to. This adds
them back into the summary that `hg id` prints, and adds a
-B/--bookmarks flag alongside the -t/--tags and -b/--branch options.
Note this introduces a slight backwards-incompatibility: the summary
printed by `hg id` now separates bookmarks from tags with a space, as
seen below, instead of running it into the tags list.
Default summary output:
$ hg id
db815d6d32e6 tip/tag1 bm1/bm2
Output with --bookmarks:
$ hg id --bookmarks
bm1 bm2
See also 5672c9e8202d which adds bookmarks back into `hg summary`.
This improves the misleading error message
$ hg identify
abort: there is no Mercurial repository here (.hg not found)!
to the more explicit
$ hg identify
abort: requirement 'fake' not supported!
for all commands in commands.optionalrepo, which includes the identify
and serve commands in particular.
This is for the case when a new entry in .hg/requires will be defined
in a future Mercurial release.
