sv_dequeuePeriod: was added at somepoint for 1.2, I can't see anywhere that it's used.
[wiki]ttycon[/wiki]: is used in 1.1 to control if stdin/stdout should be used as a console.
[wiki]ttycon_ansicolor[/wiki]: specifies if you want ^1 style colour codes to be replaced with \e[31m style colours on stderr.
cm_playerCurveClip: No idea, is cheap protected.
[wiki]r_finish[/wiki]: Forces glFinish to be called each frame. It's a bug fix for some old graphics card.
cg_creepRes: Unused in 1.1, removed in 1.2.
cg_trueLightning: Unused in 1.1, removed in 1.2.
sv_zombietime: Something to do with how long clients hang around (in msec) after they disconnect, I think todo with not getting errors if the client sends packets after the server has forgotten about them.
sv_fps: Frame rate the server runs at, I'm guessing it'd be bad to change. (also looks hard coded in places).
g_mincommandperiod: Removed in 1.2, no idea what it did in 1.1, nothing to do with g_admin though.