Xbox next

[AJenbo]

This is the next step for mainlining the Xbox port, I have cleaned up the commmit history, but it still needs to be tested by @Marty28 before we can safly replace the old PR.

[glebm]

This port may be possible with nxdk now, because:

1. nxdk does not have SDL_Mixer => We no longer use SDL_Mixer.
2. nxdk does not support exceptions nor RTTI => We can now build without exceptions and RTTI (set(NONET ON)).
3. nxdk supports modern C++, no need for C++03

We probably don't need any of the patches here anymore, it should be able to build the nxdk version like we do any other port.

Tried to build for NXDK in #4838 but there are still a few build errors.

[AJenbo]

Since marty28 appears to have abandoned GitHub I think we can just close this at this point as it was mostly untested, reported to possibly have an issue, and heavily outdated at this point, no CI.