On some maps bots went in reverse right away or got (almost to?) the
first checkpoint and then went in reverse forever. Race movement uses
derivatives on a curve but they seem to be invalid at fraction 0 and 1
so limit it to 0.05 to 0.95 (arbitrary).
This change fixes bots being stuck near the beginning of q3r_nightcity,
q3r_ridgeracer, and q3r_valley. The bots can complete the maps now.
OpenGL2: Use ri.Error instead of Com_Error in tr_vbo.c
Fix Team Arena server refresh time format
Fix -1 (unlimited) ammo decreasing ammo time remaining
Correct spelling mistakes
Fix invalid model frame developer warnings in Team Arena
