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/class_reference.h b/src/class_reference.h
new file mode 100644
index 0000000..c3be720
--- /dev/null
+++ b/src/class_reference.h
@@ -0,0 +1,41 @@
+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ART_SRC_CLASS_REFERENCE_H_
+#define ART_SRC_CLASS_REFERENCE_H_
+
+#include <stdint.h>
+
+namespace art {
+
+class DexFile;
+
+// A class is uniquely located by its DexFile and the class_defs_ table index into that DexFile
+typedef std::pair<const DexFile*, uint32_t> ClassReference;
+
+inline bool operator<(const ClassReference& lhs, const ClassReference& rhs) {
+  if (lhs.second < rhs.second) {
+    return true;
+  } else if (lhs.second > rhs.second) {
+    return false;
+  } else {
+    return (lhs.first < rhs.first);
+  }
+}
+
+}  // namespace art
+
+#endif  // ART_SRC_CLASS_REFERENCE_H_