Minor fixes
* weapon_flechettegun.lua cleanup
* npc_hunter & env_spritetrail save restore fix due to double curtime changes
Enable phys_slideconstraint notifications
Mark g_debug_* as cheats consistently
Remove player_limit_jump_speed (unused)
64bit saverestore fixes
Fixed npc_turret_floor dying multiple times when shot
Added cam.GetProjectionMatrix and cam.GetViewMatrix
Minor cleanups
* Get rid of GMOD_Player::PlayStepSound (pointless override)
Fix prop_effect not being affected by color tool's alpha setting
Minor changes
* Micro optimizations for footstep sound playing
Fix SuperDOF tiling with poster (will still be blurry as it just stretches the texture)
* Also fixed SuperDOF result texture not rendering while main menu is open
Automate Lua IMaterial refcounting
* Push_IMaterial ups the refcount, not each individual Lua binding. Now works exactly like ITexture bindings do.
Stop some pointless materials being loaded on game start up
* Delete CHudVoiceSelfStatus
* Fixed legacy server browser launching server refresh on game start if last tab was not "Internet"