Add support of Elf_Rel dynamic relocations.

llvm-svn: 247888
diff --git a/lld/ELF/SymbolTable.h b/lld/ELF/SymbolTable.h
index 9c156b5..7c4ac81 100644
--- a/lld/ELF/SymbolTable.h
+++ b/lld/ELF/SymbolTable.h
@@ -42,6 +42,8 @@
     return nullptr;
   }
 
+  bool shouldUseRela() const;
+
   const llvm::DenseMap<StringRef, Symbol *> &getSymbols() const {
     return Symtab;
   }