`windows-rdl` / clang: how will we deal with quirks?

[riverar]

The source headers sometimes exhibit quirks that may necessitate a facility to post-process our output.

Some examples thus far:

1. named enum with same named constant

   #[repr(i32)]
           enum SymTagEnum {
   ...
               SymTagPublicSymbol = 10,
               SymTagUDT = 11,
               SymTagEnum = 12,
   ...
           }
   

2. midl generated struct, enum names

   struct __MIDL___MIDL_itf_dia2_0000_0049_0001 { ... }
   enum __MIDL___MIDL_itf_dia2_0000_0000_0001 { ... }
   

   (In my experience with DIA SDK, the IDL was out of sync with the headers. Perhaps this can be revisited/fixed up stream...)