compositor-wayland: Add an actual frame around the compositor window

This adds a window frame with a close button.  Similar to the X11 backend,
The window supports dragging but not resizing.

Signed-off-by: Jason Ekstrand <jason@jlekstrand.net>
diff --git a/configure.ac b/configure.ac
index 5d0d060..41ce9ad 100644
--- a/configure.ac
+++ b/configure.ac
@@ -159,7 +159,7 @@
 if test x$enable_wayland_compositor = xyes -a x$enable_egl = xyes; then
   AC_DEFINE([BUILD_WAYLAND_COMPOSITOR], [1],
 	    [Build the Wayland (nested) compositor])
-  PKG_CHECK_MODULES(WAYLAND_COMPOSITOR, [wayland-client wayland-egl])
+  PKG_CHECK_MODULES(WAYLAND_COMPOSITOR, [wayland-client wayland-egl wayland-cursor])
 fi