[PATCH 0/5] build: wayland cross-compile support

[mchalain [marc.chalain@gmail.com]]

wayland-scanner is a source code generator and has to run on the build system.
The cross compile of wayland is broken because wayland libraries and wayland-scanner has to use two different compilers. This patches break the dependencies between wayland libraries and wayland-scanner and change the wayland-scanner build tools if necessary