- Bump version to 10

- Make upstream %systemd_{pre,post,preun,postun} aliases to their SUSE
counterparts
Packagers can now choose to use the upstream or the SUSE variants
indifferently. For consistency the SUSE variants should be preferred
since almost all SUSE packages already use them but the upstream
versions might be usefull in certain cases where packages need to
support multiple distros based on RPM.

- Improve the logic used to apply the presets (bsc#1177039)
Before presests were applied at a) package installation b) new units
introduced via a package update (but after making sure that it was
not a SysV initscript being converted).
The problem is that a) didn't handle package a renaming or split
properly since the package with the new name is installed rather
being updated and therefore the presets were applied even if they
were already with the old name.
We now cover this case (and the other ones) by applying presets only
if the units are new and the services are not being migrated. This
regardless of whether this happens during an install or an update.