* Merge from Debian unstable. Remaining changes: - debian/control: + Drop Recommends desktop-base. It contains Debian branding that we don't need nor want. - debian/*lightdm-kde-greeter.*: + Don't install lightdm-kde-greeter.conf. + Add 40-lightdm-kde-greeter.conf. + Remove postinst and preinst for doing settings. * Drop search-for-liblightdm-qt-2-or-3.patch, already fixed by 0001-FindQLightDM.cmake-Search-for-new-liblightdm-qt-3-as.patch.