doc: correct punctuation and improve typography in documentation

man: revert dynamic paths for split-usr setups This did not really work out as we had hoped. Trying to do this upstream introduced several problems that probably makes it better suited as a downstream patch after all. At any rate, it is not releaseable in the current state, so we at least need to revert this before the release. * by adjusting the path to binaries, but not do the same thing to the search path we end up with inconsistent man-pages. Adjusting the search path too would be quite messy, and it is not at all obvious that this is worth the effort, but at any rate it would have to be done before we could ship this. * this means that distributed man-pages does not make sense as they depend on config options, and for better or worse we are still distributing man pages, so that is something that definitely needs sorting out before we could ship with this patch. * we have long held that split-usr is only minimally supported in order to boot, and something we hope will eventually go away. So before we start adding even more magic/effort in order to make this work nicely, we should probably question if it makes sense at all.

man: generate configured paths in manpages In particular, use /lib/systemd instead of /usr/lib/systemd in distributions like Debian which still have not adopted a /usr merge setup. Use XML entities from man/custom-entities.ent to replace configured paths while doing XSLT processing of the original XML files. There was precedent of some files (such as systemd.generator.xml) which were already using this approach. This addresses most of the (manual) fixes from this patch: http://anonscm.debian.org/cgit/pkg-systemd/systemd.git/tree/debian/patches/Fix-paths-in-man-pages.patch?h=experimental-220 The idea of using generic XML entities was presented here: http://lists.freedesktop.org/archives/systemd-devel/2015-May/032240.html This patch solves almost all the issues, with the exception of: - Path to /bin/mount and /bin/umount. - Generic statements about preference of /lib over /etc. These will be handled separately by follow up patches. Tested: - With default configure settings, ran "make install" to two separate directories and compared the output to confirm they matched exactly. - Used a set of configure flags including $CONFFLAGS from Debian: http://anonscm.debian.org/cgit/pkg-systemd/systemd.git/tree/debian/rules Installed the tree and confirmed the paths use /lib/systemd instead of /usr/lib/systemd and that no other unexpected differences exist. - Confirmed that `make distcheck` still passes.

man: fix a bunch of links All hail linkchecker!

man: boilerplate unification

Reindent man pages to 2ch

man: document systemd-firstboot(1)

man: more grammar improvements - place commas - expand contractions (this is written prose :) - add some missing words

man: add various filenames to the index Everything which is an absolute filename marked with <filename></filename> lands in the index, unless noindex= attribute is present. Should make it easier for people to find stuff when they are looking at a file on disk. Various formatting errors in manpages are fixed, kernel-install(1) is restored to formatting sanity.

man: fix a bunch of typos in docs https://bugs.freedesktop.org/show_bug.cgi?id=54501

man: reword man page titles Make sure the man page titles are similar in style and capitalization so that our man page index looks pretty.

man: document systemd-vconsole-setup.service

relicense to LGPLv2.1 (with exceptions) We finally got the OK from all contributors with non-trivial commits to relicense systemd from GPL2+ to LGPL2.1+. Some udev bits continue to be GPL2+ for now, but we are looking into relicensing them too, to allow free copy/paste of all code within systemd. The bits that used to be MIT continue to be MIT. The big benefit of the relicensing is that closed source code may now link against libsystemd-login.so and friends.

locale: support $LANGUAGE too $LANGUAGE is a GNU extension that is probably worth supporting, since it allows specifiying an order of languages. https://bugs.freedesktop.org/show_bug.cgi?id=40510

man: Spelling fixes

man: really fix all LC_MESSAGE to LC_MESSAGES https://bugs.freedesktop.org/show_bug.cgi?id=35534

man: give an example for vconsole.conf https://bugs.freedesktop.org/show_bug.cgi?id=31955

man: document locale.conf