Added a new server ConVar "sv_competitive_minspec" that enforces the following restrictions on clients when set to 1:

r_drawdetailprops 1
r_staticprop_lod (-1 to 3)
fps_max minimum 60 (or 0)
cl_detailfade minimum 400
cl_detaildist minimum 1200
cl_interp (0 to 0.031)
cl_interp_ratio (1 to 2)

Fixed ragdolls popping when using mp_fadetoblack 1
Fixed a buffer overrun exploit that could be used to attack/crash servers.
Fixed a crash at startup when no sound emitter scripts were loaded.
Fixed a crash that could happen if a custom model was loaded with missing materials.
Fixed a crashed related to alt-tab.
Fixed a potential crash in the shaders.
Fixed a crash when running custom maps with missing model files
Removed the client console commands "mat_supress" and "mat_debug"