Fix control fields of libsystemd-* transitional packages.
Simplify the installation of headers and manpages into libsystemd-dev.
Add new systemd service users in systemd postinst.

Conflicts:
	debian/changelog
Various minor cleanup/fixes in Debian patches.
Restore Revert-service-ignore-dependencies-on-syslog-and-loc.patch
Replace sjoerd's sysv-generator patch.
Order rcS.d init scripts before basic.target instead of sysinit.target.