Revert "Switch external cvtres.exe for llvm's own resource library."

This reverts commit 600d52c278e123dd08bee24c1f00932b55add8de.

This patch still seems to break CrWinClangLLD, reverting until I can
find root problem.

llvm-svn: 307189

llvm/lib/Object/WindowsResource.cpp

@@ -328,7 +328,7 @@ private:
   std::unique_ptr<MemoryBuffer> OutputBuffer;
   char *BufferStart;
   uint64_t CurrentOffset = 0;
-  COFF::MachineTypes MachineType;
+  Machine MachineType;
   const WindowsResourceParser::TreeNode &Resources;
   const ArrayRef<std::vector<uint8_t>> Data;
   uint64_t FileSize;
@@ -350,7 +350,6 @@ WindowsResourceCOFFWriter::WindowsResourceCOFFWriter(
     : MachineType(MachineType), Resources(Parser.getTree()),
       Data(Parser.getData()), StringTable(Parser.getStringTable()) {
   performFileLayout();
-
   OutputBuffer = MemoryBuffer::getNewMemBuffer(FileSize);
 }