doc/ missing in build directory for out-of-tree builds
**autoconf** allows building tor outside the source directory using `--srcdir=DIR`. In that case, _doc/_ is not copied or symlinked from source to build directory, causing pages to be unnesseccarily regenerated using **rst2man**. Would it be possible to adjust the _configure_ stage to account for this? Specifically, this would allow complete out-of-tree builds at least on OpenBSD, where where the following quirk is required after _configure_ and before _build_ stage to enable separation without **py-docutils** as additional build dependency: ``` pre-build: ln -sf ${WRKSRC}/doc/ ${WRKBUILD}/ ``` **Trac**: **Username**: kn
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