Cleanup g_utils.c and add sanity checks
Cleanup g_weapon.c and add sanity checks
Cleanup client.c and add sanity checks
Cleanup hud.c and add sanity checks
Cleanup trail.c and add sanity checks
Cleanup view.c and add sanity checks
Cleanup weapon.c and add sanity checks
Cleanup ball.c and add sanity checks
Cleanup tag.c and add sanity checks