change, transform convert branches to bookmarks

[Uwe Brauer]

   > On Fri, Sep 2, 2016 at 12:24 PM, Uwe Brauer <oub at mat.ucm.es> wrote:

   > One option is to use "hg convert" with the "--branchmap" option to
   > produce a new repository without any named branches. If you've only
   > got a small number of branches, it should be fairly easy to create the
   > bookmarks by hand afterwards.

   > https://www.mercurial-scm.org/wiki/ConvertExtension#A--branchmap

Sounds good, thanks

Uwe