merge with mercurial-4.0

merge future 5.6.1

Added tag 5.6.1 for changeset 70694b2621ba

update debian changelog

evolve: extend API fix from 25254b2f8116 to another relevant case For some reason, only part of this API change got fixes. Test did not caught this because 'False' is a valid revision number (0) and update force did not mind using it as an ancestors. The API changed in Mercurial 43c00ca887d1

hgext3rd: drop the last remains of hgext3rd Not that all extensions as moved, we can drop the directory.

hgext3rd: move 'obsolete' as 'evolve.legacy' We move that last extension. It seems like we could use the repo upgrade framework for this, but this is another adventure.

hgext3rd: move 'drophack' as 'evolve.hack.drophack' Yet another extension migrating. Ideally we would implement stripping obsolescence marker in code soon and be able to dispose of this extensions directly. In the mean time this goes into the "hack" namespace.

hgext3rd: move 'simple4server' as 'evolve.serveronly' We also more the server only extension into hgext3rd. We makes it a python sub-module of evolve for two reasons: * less polution in the hgext3rd namespace, * this make it possible to share the code between 'evolve' and 'evolve.serveronly' instead of duplicating it. note that we now install the extension too

hgext3rd: move 'directaccess' and 'inhibit' in 'evolve.hack' We move them in the 'hgext3rd' package. In the same move we put them under the 'evolve' package for clarity. We use a sub-package 'hack' to make their status clearer.