Always include <time.h> in mveplay.c
Define WIN32_LEAN_AND_MEAN on Windows
Add definition guard for struct timespec
Disable Parallax AI path debug printing
Remove unused piggy_get_bitmap_name
Include snddecom.h in snddecom.c
Mark reset_all_robot_centers as used for debuggers
Only define multi_do_ranking in Descent II
Mark set_robot_state used for debuggers
Mark OpenGL loader functions static
Remove unused function DeleteCurSegment
Remove unused gamefont_curfontname
Remove unused digi_sound_debug
Remove unused mem_print_all
Remove unused vclip_play
Delete unused function ObjectMakeSmaller
Delete unused function ObjectMakeLarger
Delete unused function select_group
Remove unused function add_trigger_control
Remove unused function vm_vec_interp