Updating the compiler to use the new-world model

New compiler is integrated and passes first test (Fibonacci).

Change-Id: Ic5448ab89ebd22baa30fafc3d1300324687d1fc2
diff --git a/src/assembler_x86.h b/src/assembler_x86.h
index afccc4d..52a1202 100644
--- a/src/assembler_x86.h
+++ b/src/assembler_x86.h
@@ -200,6 +200,10 @@
   Assembler() : buffer_() {}
   ~Assembler() {}
 
+  InstructionSet GetInstructionSet() const {
+    return kX86;
+  }
+
   /*
    * Emit Machine Instructions.
    */