evolve: update the public divergence resolution logic to cover --continue case
To continue the interrupted evolve in case of public divergence:
we will have to store the node of that public cset which was in
content divergence with the other cset, so that we can perform the
phase divergence resolution between that public cset and a newnode
which is the result of content-divergence resolution.
Added tests reflect the behaviour this patch adds.
-------------------------
Evolve Commands Reference
-------------------------
.. highlight:: none
amend
-----
.. hghelp:: amend
evolve
------
.. hghelp:: evolve
fold
----
.. hghelp:: fold
metaedit
--------
.. hghelp:: metaedit
next
----
.. hghelp:: next
obslog
------
.. hghelp:: obslog
pdiff
-----
.. hghelp:: pdiff
previous
--------
.. hghelp:: previous
prune
-----
.. hghelp:: prune
pstatus
-------
.. hghelp:: pstatus
split
-----
.. hghelp:: split
touch
-----
.. hghelp:: touch
uncommit
--------
.. hghelp:: uncommit