Separate VIU settings per platform

[BioeJD]

Is there a way to setup different VIU settings per platform?

Example:

For Mac, I can have everything unchecked here:

[BioeJD]

And an issue related to this: I'm writing a pre-process script to change these settings on Mac (until I hear back on whether there's a better method).

I can successfully change these settings and I've also excluded the SteamVR assemblies from my builds, but I still get compile errors because VIU always adds the SteamVR scripting symbols, even when I have OpenVR deselected and SteamVR assemblies excluded.

[BioeJD]

I've added an additional method to remove the scripting define symbols in the pre-build script.