spt_dev_cvars lists obsolete hidden spt command names

[tmob03]

Instead of just listing the dev cvars from the game, it also lists all the hidden cvars spt has had since dropping the y_ prefix.

] spt_dev_cvars 
_y_spt_afterframes_await_legacy
_y_spt_afterframes_reset_on_server_activate
_y_spt_anglesetspeed
_y_spt_pitchspeed
_y_spt_yawspeed
tas_anglespeed
y_spt_autojump
_y_spt_autojump_ensure_legit
y_spt_jumpboost
y_spt_hud_edgebug
y_spt_hud_edgebug_sec
y_spt_mousemove
y_spt_demo_block_cmd
y_spt_hud_ent_info
y_spt_bms_flashlight_fix
y_spt_fast_loads
y_spt_free_oob
y_spt_noclip_nofix
...

[lipsanen]

dont see why this is a problem

[tmob03]

it is not a big problem, but its annoying and isnt what the original command is intended to list

[lipsanen]

works as intended, no fix needed