make distcheck fails for --disable-asciidoc
make[4]: Entering directory /u/src/tor/linus/tor/tor-0.2.2.14-alpha-dev/_build/doc' make[4]: *** No rule to make target
tor.1.txt', needed by `tor.1.in'. Stop.
make[4]: Entering directory /u/src/tor/linus/tor/tor-0.2.2.14-alpha-dev/_build/doc' make[4]: *** No rule to make target
tor.1.txt', needed by `tor.1.in'. Stop.