directaccess: add mechanism to load directaccess after some other extensions
directaccess needs to load after some extensions to avoid interfering with them.
This patch adds a mechanism to specify what extension directaccess needs to load
after.
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