ZDoom

Done.

Surely they can be added, I simply forgot that part. Thinking about it, there really needs to be a way to use the same declaration of enums like this for both C and ZScript to avoid these problems in the future.

It seems some of the [url=https://github.com/coelckers/gzdoom/blob/59b4e297c0ef20fcb008c3f0b94e67a3a1be9cdd/src/r_data/renderstyle.h#L61]legacy renderstyle constants[/url] weren't [url=https://github.com/coelckers/gzdoom/blob/master/wadsrc/static/zscript/constants.zs#L836]exported to ZScript[/url]. Was this intended, or should can they be exported too?