Subzero: Add basic ELFObjectWriter (text section, symtab, strtab, headers)

src/IceTranslator.h

Index: src/IceTranslator.h
diff --git a/src/IceTranslator.h b/src/IceTranslator.h
index 9aa56aaec8e3cfd4d44d45cccd9c3c3ad3cbc717..2e5f1e5d16bc2b869099596a43b073cb1eebc22f 100644
--- a/src/IceTranslator.h
+++ b/src/IceTranslator.h
@@ -60,6 +60,9 @@ public:
   /// list of corresponding variable declarations.
   void lowerGlobals(const VariableDeclarationListType &VariableDeclarations);
 
+  /// Write the final object file after completing translation.
+  void writeObjectFile();
+
   /// Creates a name using the given prefix and corresponding index.
   std::string createUnnamedName(const IceString &Prefix, SizeT Index);