obsolete: fix typos, improve messages

test-obsolete: handle local clones copying obsolete markers

obsolete: rely on core for context and reveset which exist there (this means loosing the cache :-( )

obsolete: rely on core for rollback support

obsolete: rely on core to hide extinct changeset

obsolete: Stop turning obsolete secret changesets secret Extinct changeset are not properly excluded by core.

obsolete remove unused module

obsolete: drop outdated doc

Use the core check heads mecanism to prevent zaelous warning

obsolete: rely on core to filter extinct changeset out

[temp] fix obsolete marker cloning broken in core.

Wider triggering of the debug marker abort

obsolete: fix visibleheads/branchmap wrapping

merge with stable fix and preparation

obsolete: move hint punching to push Core does not raise the warning in check heads

obsolete: doc punch the hint about hg stabilize into the push error message. The goal is to ease the transposition of to default where half of the message may be raised by core directly.