[linux] Add support for building the 3.18 kernel.
[cmake] Define CMAKE_SYSTEM_PROCESSOR.
[system/skeleton] Auto-configure enp2s0 interface.
[libglib2] Bump to 2.42.1.
[libsoup] Bump to 2.48.1.
[libxkbcommon] Bump to 0.4.3. Build with X11 support disabled.
[xkeyboard-config] Remove dependency on X11.
[cairo] Switch to WK4WL Cairo. Build with EGL enabled for Wayland.
[mesa3d] Switch to WK4WL Mesa. Remove unnecessary dependencies on X11.
[weston] Switch to WK4WL Weston. Enable EGL, DRM backend when requested.
[kmscube] Add package.
[wpe] Add package.