change: increase default of scr_centertime to 4

(this makes center messages appear longer. previous value was 2)

Quake/gl_screen.c

@@ -94,7 +94,7 @@ cvar_t		scr_viewsize = {"viewsize","100", CVAR_ARCHIVE};
 cvar_t		scr_fov = {"fov","90",CVAR_NONE};	// 10 - 170
 cvar_t		scr_fov_adapt = {"fov_adapt","1",CVAR_ARCHIVE};
 cvar_t		scr_conspeed = {"scr_conspeed","500",CVAR_ARCHIVE};
-cvar_t		scr_centertime = {"scr_centertime","2",CVAR_NONE};
+cvar_t		scr_centertime = {"scr_centertime","4",CVAR_NONE};
 cvar_t		scr_showturtle = {"showturtle","0",CVAR_NONE};
 cvar_t		scr_showpause = {"showpause","1",CVAR_NONE};
 cvar_t		scr_printspeed = {"scr_printspeed","8",CVAR_NONE};