- add branding for lightdm-gtk-greeter

- reworked lightdm-add-scripting-hooks.patch in order to match the
version committed upstream
- added lightdm-set-gdmflexiserver-envvar.patch which sets the
GDMFLEXISERVER environment variable for the gdmflexiserver
wrapper
- added lightdm-lock-screen-before-switch.patch in order to try
locking the screen before switching users
- fixed usage of --libexecdir

- use update-alternatives for selecting the default greeter

- added lightdm-fix-underlinking.patch in order to fix an
underlinking issue with test-qt-greeter

- Added proper Supplements for the greeters
- remove version require for the greeters, 3rd party greeters
don't always follow the same version as lightdm

- added lightdm-add-scripting-hooks.patch which implements
scripting hooks compatible with xdm/gdm (lp#602505)

- update to verion 0.9.4
- lightdm-set-defaults enables tweaking the default session and
chosen greeter for lightdm
- move xsessions-directory and xgreeters-directory from
[SeatDefaults] to [LightDM].
- add AddSeat D-Bus method for adding dynamic seats
- added a dm-tool program that allows user switching and adding