LDC Windows exception handling

[Christian Kamm]

> Speaking of LDC, any chance that the exception handling on Win32 gets
> fixed in the near future?  

No, unfortunately.

It's a problem with LLVM only supporting Dwarf2 exception handling. I'm
pretty sure it'd work if we used ELF for the object files and GCC for
linking, but Windows people tell me this is hardly acceptable.

We won't get 'real' exceptions working on Windows until someone adds SEH
support to LLVM.

Volunteers?