evolve: extract the code computing dependencies in a separate function
The code to compute dependencies between unstable changeset can be reused to
compute the next reveset. This patch extracts it in its own function to make
it reusable.
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