doc: correct orthography, word forms and missing/extraneous words

doc: correct punctuation and improve typography in documentation

man: typo fixes

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.

coredump: make sure we vacuum by default Only if both keep_free and max_use are actually 0 we can shortcut things and avoid vacuuming. If either are positive or -1 we need to execute the vacuuming. http://lists.freedesktop.org/archives/systemd-devel/2015-April/031382.html

Do not advertise .d snippets over main config file For daemons which have a main configuration file, there's little reason for the administrator to use configuration snippets. They are useful for packagers which need to override settings, but we shouldn't advertise that as the main way of configuring those services. https://bugs.freedesktop.org/show_bug.cgi?id=89397

man: boilerplate unification

man: delete ZX as sole compression; "Compress=" as boolean In man journald.conf, removes reference to XZ as sole form of compression. See commit d89c8fdf48c7bad5816b9f2e77e8361721f22517. In man coredump.conf, clarifies that "Compression=" controls existence, not type, of compression.

man: add a link to systemd-coredump(8) in Description of coredump.conf(5)

coredump: Support coredump.conf.d directories in the usual search paths

man: add emacs header to get correct indention in nxml-mode for the manpage XML files that use 2ch indenting In the long run we really should figure out if we want to stick with 8ch or 2ch indenting, and not continue with half-and-half. For now, just make emacs aware of the files that use 2ch indenting.

docs: remove repeating words from man/*xml

doc: grammatical corrections

coredump: replace Compression= setting by simpler Compress= boolean setting Let's move things closer to journald's configuration settings, which knows Compress= already, as a boolean. This makes things more uniform, but also gives us more freedom to possibly swap out the used compression algorithm one day.

coredump: don't expose the compression level as configuration option This sounds overly low-level and implementation-detaily. Let's just use the default level XZ suggests. This gives us more room to possibly swap out the compression algorithm used, as the compression level range will not leak into user configuration.

coredump: add simple coredump vacuuming When disk space taken up by coredumps grows beyond a configured limit start removing the oldest coredump of the user with the most coredumps, until we get below the limit again.

man: add coredump.conf(5)