[Issue 21932] importC: enum 'ENUM' conflicts with enum 'ENUM'

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=21932

--- Comment #4 from Iain Buclaw <ibuclaw at gdcproject.org> ---
The struct test case has been fixed with the introduction of TypeTag.

The enum test case still fails, however.

---
enum ENUM { ENUM_a };
enum ENUM myenum;  // Error

--