A bookmark can already be pushed with 'hg push origin -B topic-foo'.
The pull command also supports bookmarks.
This patch adds support for bookmarks using the '_opt2logrevset' code path.
The list of changesets for a bookmark can now be obtained simply with:
'hg log -B topic-foo'.
Reviewed-by: Elenie Godzaridis <firstname.lastname@example.org>