evolve: fix error in builddependencies
When MultipleSuccessorsError was raised, we were still running the code below
to add the dependency if succ was not None from a previous iteration.
This bug was harmless because dependencies and rdependencies are sets but it
makes the code clearer this way.
recursive-include docs/figures *.svg
include docs/figures/hgview-example.png
include docs/*.rst
include docs/*.py
include docs/tutorials/*.t
include docs/makefile
include docs/static/*.svg
include hgext/__init__.py
include hgext/evolve.py
include hgext/pushexperiment.py
include hgext/simple4server.py
include setup.py
include README
include COPYING
include tests/*.t
include tests/*.py
include tests/_exc-util.sh
include tests/dummyssh
exclude tests/test-oldconvert.t
exclude tests/test-qsync.t
exclude tests/test-drop.t