(Menu) Menu now gets inited from driver.c instead of frontend.c
(Console) Better way to 'restart' instead of using the function
'restart' - call rarch_set_fullscreen instead. 'Restart' function
in driver interface can go now
(Menu) Menu now gets properly deinited/reinited when - say -
rarch_set_fullscreen is toggled or some other state change like this.
If init_assets function of menu_ctx_driver is implemented, this should
ensure all GL/D3D assets get 'cleaned up' prior to teardown of the video
driver, and properly reinited after the video driver is brought up again