Disallow some SetNW/GetNW methods being usable on NULLs without errors
Rip out "Setup Steam Install Path" stuff that is unused
Less console spam in vbsp output and others. Also touches how "low violence" settings are handled
Fix vbsp complaining about a missing cvar gmod_unload_test
Fixed npc_strider code causing mat_dxlevel warning on start up
Try not shipping useless client files with Linux SRCDS
Do not print pointless "Couldn't load shader dll" on linux srcds