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_arm.h b/src/assembler_arm.h
index bad3023..2072845 100644
--- a/src/assembler_arm.h
+++ b/src/assembler_arm.h
@@ -197,6 +197,10 @@
  public:
   Assembler() : buffer_() {}
 
+  InstructionSet GetInstructionSet() const {
+    return kArm;
+  }
+
   // Data-processing instructions.
   void and_(Register rd, Register rn, ShifterOperand so, Condition cond = AL);