[hlcoders] Client-Side Hitbox Tracing

-- -- As some of you know valve disabled hit-box tests for client-side tracelines. This causes problems with inconsistent hits between the client and server, leading to many OMG HAXXOR I SHOT YOU!!111s. To fix this, I implemented my own hitbox tests using the ray-polyhedron intersection

[hlcoders] Client-Side Hitbox Tracing

Sorry if this got sent a second time, my first message did not go through as of a day later... Anyway, as some of you know valve removed client-side hitbox tracing from 1110 for whatever reason, meaning that if any traceline hits a player hull, it will count as hitting a player, leading to eg