Remove ExtractCodeAndPrelink and switch Portable to MCLinker

Change-Id: Ia2459c7da6b79e0a1c0f1148c6e28ad9cbbe27a2
diff --git a/src/heap.cc b/src/heap.cc
index c8df031..64df6b8 100644
--- a/src/heap.cc
+++ b/src/heap.cc
@@ -104,6 +104,10 @@
   std::string base_option_string(StringPrintf("--base=0x%x", ART_BASE_ADDRESS));
   arg_vector.push_back(strdup(base_option_string.c_str()));
 
+  if (!kIsTargetBuild) {
+    arg_vector.push_back(strdup("--host"));
+  }
+
   std::string command_line(Join(arg_vector, ' '));
   LOG(INFO) << command_line;