Add PE-only MD support to Windows symbol converter.

- Only 64-bit PEs supported.
- Re-add some scripts that were missed in initial move of code.
- Change msdia120.dll dependency to msdia140.dll.
- Add tests for Intel, AMD, and NVidia Microsoft Symbol Stores.
- Windows symbol converter now attempts to fall back to PE-only metadata
  when it fails to locate a PDB.
- Remove the 'binary' folder under converter_exe. Need to think more
  about how a deployment should look and what tool(s) to use in creating
  one.

Change-Id: I52e42cbe5e759874a25114c2483e8b50d73fdf77
Reviewed-on: https://chromium-review.googlesource.com/c/breakpad/breakpad/+/1670098
Reviewed-by: Ivan Penkov <ivanpe@chromium.org>

src/common/windows/pe_util.cc

@@ -143,10 +143,6 @@ bool ReadModuleInfo(const wstring & pe_file, PDBModuleInfo * info) {
 
   PIMAGE_OPTIONAL_HEADER64 optional_header =
       &(reinterpret_cast<PIMAGE_NT_HEADERS64>(img->FileHeader))->OptionalHeader;
-  if (optional_header->Magic != IMAGE_NT_OPTIONAL_HDR64_MAGIC) {
-    fprintf(stderr, "Not a PE32+ image\n");
-    return false;
-  }
 
   // Search debug directories for a guid signature & age
   DWORD debug_rva = optional_header->