Point to upstream master

[upstream] Point to upstream master
Xorg support

[rpm] Xorg support
Add xcb-xkb dependency

[rpm] Add xcb-xkb dependency
Remove Qt5Compositor dependency

[rpm] Remove Qt5Compositor dependency
Add sddm-autologin pam file

[rpm] Add sddm-autologin pam file
Remove wayland-client dependency

[rpm] Remove wayland-client dependency
Add explicit dependency on libxcb >= 1.10

[rpm] Add explicit dependency on libxcb >= 1.10
Update to latest git snapshot

[upstream] Update to latest git snapshot
Use upstream systemd unit

[rpm] Use upstream systemd unit
Don't remove -march=native as upstream fixed it

Upstream already remove it.

[rpm] Don't remove -march=native as upstream fixed it
Create sddm user if needed

[rpm] Create sddm user if needed
Add sddm user to the video group

[rpm] Add sddm user to the video group
Create sddm home directory

[rpm] Create sddm home directory
Update minimum and maximum uid

Update values according to Mer's /etc/login.defs from the
shadow-utils package.

[rpm] Update minimum and maximum uid
Update to latest version

[rpm] Follow upstream changes to paths
[upstream] Update to latest version
Update to latest version

Now that upstream has greeter session we don't need to add the sddm user
to the video group.

[rpm] Don't add sddm user to video group
[upstream] Update sources
[rpm] Drop sddm user after uninstall
[rpm] Add missing sdd-helper to file list
[rpm] Retrieve minimum and maximum uid from /etc/login.defs

Don't hard code values that may change in the future.
[rpm] Use %{_sysconfdir} rather than /etc in sddm.conf substitution