libart-compiler cleanup

- Move compile-time code to src/compiler and libart-compiler
  OatWriter, ImageWriter, ElfWriter, ElfFixup, ElfStripper, stub generation
- Move ClassReference and MethodReference to remove MethodVerifier dependency on CompilerDriver
- Move runtime_support_llvm.cc out of src/compiler and next to runtime_support.cc
- Change dex2oat and gtests to directly depend on libart-compiler
- Move non-common definitions from Android.common.mk to more specific makefiles
- Add LOCAL_ADDITIONAL_DEPENDENCIES on appropriate makefiles

Change-Id: I897027e69945914128f21f317a92caf9255bc600
diff --git a/src/runtime.h b/src/runtime.h
index 0b893a3..fc0ce83 100644
--- a/src/runtime.h
+++ b/src/runtime.h
@@ -134,9 +134,11 @@
     return is_concurrent_gc_enabled_;
   }
 
+#ifdef ART_SEA_IR_MODE
   bool IsSeaIRMode() const {
     return sea_ir_mode_;
   }
+#endif
 
   void SetSeaIRMode(bool sea_ir_mode) {
     sea_ir_mode_ = sea_ir_mode;