Revert "Revert "sd-bus: change serialization of kdbus messages to qualify in their entirety as gvariant objects"" This reverts commit 954871d8ba15911d014f76ed2c7a9492953cf39d.

Revert "sd-bus: change serialization of kdbus messages to qualify in their entirety as gvariant objects" This breaks booting with kdbus. This reverts commit b381de4197157748ed96e469fcc372c23f842ae1.

sd-bus: change serialization of kdbus messages to qualify in their entirety as gvariant objects Previously, we only minimally altered the dbus1 framing for kdbus, and while the header and its fields where compliant Gvariant objects, and so was the body, the entire message together was not. As result of discussions with Ryan Lortie this is now changed, so that the messages in there entirely are fully compliant GVariants. This follows the framing description described here: https://wiki.gnome.org/Projects/GLib/GDBus/Version2 Note that this change changes the framing of *all* messages sent via kdbus, this means you have to reboot your kdbus system, after compiling and installing this new version.

libsystemd: split up into subdirs We still only produce on .so, but let's keep the sources separate to make things a bit less messy.