Error out if dependencies aren't met.
Error out if dependencies aren't met.

Also mention the right version of Wayland we require.

Change-Id: Ie9ad14b8d8230cfd3b2772511b853d71f2eed977

locusf/qtwayland-1,locusf/qtwayland-1,locusf/qtwayland-1,locusf/qtwayland-1