evolve: add a new method picksplitsuccessor() in utility.py
This patch adds the logic to return a single successor of a rev which was
split. If split revisions are on a single topological branch then we return
highest one; otherwise prompt user to choose an evolve destination.
Anton Shestakov <av6@dwimlabs.net> [Mon, 13 Jan 2020 15:36:24 +0700] rev 5072
obshistory: remove unused ismetablacklisted()
Code that used this function was removed in 461b9a91b662.
But we still need to add one item currently missing from METABLACKLIST in core:
touch noise.