Add basic support for Microsoft enum forward declaration. 
Assigning an underlying integral type to an enum forward declaration will come in a next patch.

llvm-svn: 113716
3 files changed
tree: 89c05c4065228fe18c26bfeb7f66fba1e56b4320
  1. clang/
  2. compiler-rt/
  3. libcxx/
  4. lldb/
  5. llvm/