test: add a test that all symbol version file is updated It is easy to forget to update these files when adding new symbols. Stolen with slight changes from libinput (commit by Marek Chalupa): https://cgit.freedesktop.org/wayland/libinput/commit/?id=a9f216ab47ea2f643f20ed741b741a2b5766eba3 Signed-off-by: Ran Benita <ran234@gmail.com>