Quick compiler: more refactoring

Focus on header file cleanup here.  Note: target_list.h
is transitional, and upcoming CLs will do additional header
file reorganization.

Change-Id: If86e1a8c1c43305762fe37b157a9d3c17d911ea7
diff --git a/src/compiler/ralloc.h b/src/compiler/ralloc.h
new file mode 100644
index 0000000..be94419
--- /dev/null
+++ b/src/compiler/ralloc.h
@@ -0,0 +1,28 @@
+/*
+ * Copyright (C) 2012 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_COMPILER_RALLOC_H_
+#define ART_SRC_COMPILER_RALLOC_H_
+
+#include "compiler_internals.h"
+
+namespace art {
+
+void oatSimpleRegAlloc(CompilationUnit* cUnit);
+
+}  // namespace art
+
+#endif  // ART_SRC_COMPILER_RALLOC_H_