Use primitive types instead of enums in variable and function definitions

[MainMemory]

It just makes things more difficult for everyone to use. PkR was trying to use the '|=' operator on the LastRenderFlags variable, but if you try that, the compiler tells you "this operation on an enumerated type requires an applicable user-defined operator function". Changing the variable to int allows it to work.
The LoadObject function is also a pain to use if you want no flags or multiple flags, you have to cast the value to the LoadObj type for it to work.