test: adapt test to less frequent branch warning
The 701df761aa94 changeset in mercurial core made the branch warning issue only
for the first branch created. We adapt the tests to reflect this change.
all: tutorials/tutorial.rst static/logo-evolve.ico
sphinx-build . ../html/
tutorials/tutorial.rst: tutorials/tutorial.t
python test2rst.py tutorials/
static/logo-evolve.ico: static/logo-evolve.svg
convert -resize 36x36 static/logo-evolve.svg static/logo-evolve.ico