directaccess: don't try to partialmatch things that aren't hashes
Trying to partialmatch identifiers like '.' turns out to be (a) pointless and
(b) extremely slow. On a repo with a million commits, with directaccess
enabled,
hg log -r .^::.
goes from 2.1 seconds to 0.5.
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