Enable smooth transition from plymouth to the greeter
Enable coredumps from Xserver
Change source url to github
Explicitly require a greeter
Enable explicit internal Requires

Disable guest login as system default preset (CVE-2017-8900)
Modernize spec-file

- lightdm-1.18.0 (#1321032)
- use lightdm.conf.d/ snippets for default configuration (instead of patching) (#1096216)

- enable libaudit support
- (re)enable hardening for f23+, at least (#956868)
- disable tests
- drop now-unused lightdm.pam.f19