[MP] Gamecode: Fix g_banIPs showing negative values sometimes.
Thanks to videoP for reporting issue.
[MP] Update g_gravity and g_restarted immediately in SP_worldspawn.  Remove cvar set of "g_enableBreath", because it isn't used.
[MP] Additional font fade fix that was missing.
[MP] Fix RB_CheckOverflow to account for no more SHADER_MAX_VERTEXES/2 check in shadow code.
[SP] Fix RB_CheckOverflow to account for no more SHADER_MAX_VERTEXES/2 check in shadow code.