All used non-special are currently exported by the config API. The only missing
ones for the special configuration options which would be be overwritten by
special game settings and thus need a special config rewrite
* alt_tex_size
* use_sts1_only
* force_calc_sphere
* correct_viewport
* increase_texrect_edge
* decrease_fillrect_edge
* texture_correction
* pal230
* stipple_mode
* stipple_pattern
* force_microcheck
* force_quad3d
* clip_zmin
* clip_zmax
* fast_crc
* adjust_aspect
* zmode_compare_less
* old_style_adither
* n64_z_scale
* optimize_texrect
* ignore_aux_copy
* hires_buf_clear
* fb_read_alpha
* useless_is_useless
* fb_crc_mode
* filtering
* fog
* buff_clear
* swapmode
* aspect
* lodmode
* fb_smart
* fb_hires
* read_back_to_screen
* detect_cpu_write
* fb_get_info
* fb_render
