Initial packaging for Maemo UI

Add initial packaging for Maemo UI from from https://github.com/fremantle-gtk2/ project. Currently it only includes the bare minimum needed to start hildon-desktop.

Since hildon-desktop is X11 compositor/window manager, either xorg-server or non-rootless Xwayland instance is required. mesa and mesa-dri-swrast should be installed as well, unless device provides OpenGL through other means.

To make hildon-desktop find its theme (install hildom-theme-alpha first): ln -s /usr/share/themes/alpha ln -s /usr/share/themes/default For default wallpapers: cp /usr/share/themes/alpha/backgrounds/wallpaper1.png ~/.backgrounds/background-1.png cp /usr/share/themes/alpha/backgrounds/wallpaper2.png ~/.backgrounds/background-2.png cp /usr/share/themes/alpha/backgrounds/wallpaper3.png ~/.backgrounds/background-3.png cp /usr/share/themes/alpha/backgrounds/wallpaper4.png ~/.backgrounds/background-4.png