gmod_src: Added Entity:IsEFlagSet()

Revision 669
Added Entity:IsEFlagSet()
Added Entity:AddEFlags()
Added Entity:RemoveEFlags()
& enums Changed Files:
[ul]
[li]trunk/src_garrysmod/garrysmod/LuaEnums.cpp [/li][li]trunk/src_garrysmod/garrysmod/LuaGameEnums.cpp [/li][li]trunk/src_garrysmod/garrysmod/Objects/lua_entity.cpp[/li][/ul]

Committed By Garry Newman