evolve: handle merge commit with single obsolete parent (issue4389) This handles evolving merge commits with a single obsolete parent. Merge commits with two obsolete parents are still unsupported. Note this depends on a change to merge.graft in core. Older versions of mercurial will not have this functionality. Also, test-unstable.t will fail with older versions.

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