evolve: add a tr arguement to retractboundary
Mercurial core is adding a transaction argument to its phase movement function.
We do the same. If Mercurial appears to be an old version (without the extra
args) we call it the old way.
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