#include <winbase.h> is not enough for Visual C++ 2013, it errors:

1>C:\Program Files (x86)\Windows Kits\8.1\Include\um\minwinbase.h(46):
error C2146: syntax error : missing ';' before identifier 'nLength'
1>C:\Program Files (x86)\Windows Kits\8.1\Include\um\minwinbase.h(46):
error C4430: missing type specifier - int assumed. Note: C++ does not support default-int
...

including <windows.h> is actually required.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221244 91177308-0d34-0410-b5e6-96231b3b80d8
CodeGen: Enable DWARF emission for MS ABI targets

This is experimental, just barely enough to get things to not
immediately combust.

A note for those who are curious:
Only lld can successfully link the object files, other linkers truncate
the section names making the debug sections illegible to debuggers.

Even with this in mind, we believe we are having trouble with SECREL
relocations.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221245 91177308-0d34-0410-b5e6-96231b3b80d8