topic: use ui.configoverride() instead of ui.backupconfig()
ui.configoverride() was added in hg 4.1. util.nullcontextmanager() was
added in hg 4.4.
SPHINXBUILD ?= sphinx-build
all: tutorials/tutorial.rst tutorials/topic-tutorial.rst static/logo-evolve.ico
$(SPHINXBUILD) . ../html/
tutorials/tutorial.rst: tutorials/tutorial.t test2rst.py
python test2rst.py tutorials/
tutorials/topic-tutorial.rst: tutorials/topic-tutorial.t test2rst.py
python test2rst.py tutorials/
static/logo-evolve.ico: static/logo-evolve.svg
convert -resize 36x36 static/logo-evolve.svg static/logo-evolve.ico