* Implemented robust length-prefix framing logic for non-blocking sockets (previously used character sequences to determine length, but you cannot use character sequences on protocol buffers as its binary data. This logic should fix all problems regarding some commands not getting networked properly to the server and stuff not getting printed on the client).
* Increased buffer size to std::vector::max_size when netconsole is authenticated (MAX_NETCONSOLE_INPUT_LEN still remains enforced on accepted but not authenticated connections to prevent attackers from crashing the server).
* Process max 1024 bytes each recv buffer iteration.
* Additional optimizations and cleanup.
* Changing RCON passwords on the server now closes all connections and re-initializes the system.
* Fully mapped out VFTable interface for IConVar* (used for ConVar callbacks, see callback.cpp).
* Move AIN/NavMesh debug draw to ai_utility_shared.cpp.
* Use shift index + range for AIN debug draw.
* Added cvar for determining max distance between camera and tile (anything outside this range doesn't get draw).
* Pointer to g_pMemAllocSingleton
* New wrapper for returning the singleton, and creating one if not yet initialized (game shares the same pointer, and is aware of its creation).
navmesh_draw_portal > -1 enables the overlay, with this cvar you can also shift through tiles.
navmesh_debug_type [0 - 4] selects the NavMesh (small, med_short, medium, large, extra_large).
navmesh_draw_bvtree > -1 enables the overlay, with this cvar you can also shift through tiles.
navmesh_debug_type [0 - 4] selects the NavMesh (small, med_short, medium, large, extra_large).
Only OverlayLine_t has a field to determine whether or not to ignore the z-buffer.
Added ConVar 'r_debug_overlay_zbuffer' to allow setting z-buffer for all overlays.
* Move render utils to dedicated file.
* Implement more render/mesh utils.
* Added structure for OverlayTriangle_t, OverlaySweptBox_t and OverlayCapsule_t.
OverlayCapsule_t has been modified to accommodate the size in r5 (2 new vectors).
SourceSDK mathlib port with light modifications.
Renamed Vector to Vector3D (to avoid confusion with std::vector (declared as vector) and Vector2D/Vector4D).
Removed padding that was causing the structure to misalign with the game's one.
Enabled 'SVC_UserMessage::Process()' hook (function works properly after the structure alignment).
