Experiment with the continuous build.

Change-Id: I05141c7395777ac04d53c23a2eacb2047f4e9104
diff --git a/src/dex2oat.cc b/src/dex2oat.cc
index c9551aa..2770a96 100644
--- a/src/dex2oat.cc
+++ b/src/dex2oat.cc
@@ -555,6 +555,10 @@
     }
   }
 
+#if !defined(ART_USE_LLVM_COMPILER)
+  thread_count = 1;
+#endif
+
   if (oat_filename.empty() && oat_fd == -1) {
     Usage("Output must be supplied with either --oat-file or --oat-fd");
   }