Tell editors that these are Makefiles (or fragments thereof).

Change-Id: I0c5e29ac750b9605b1e8f823d6998d31a933b7a4

Android.mk

+# -*- mode: makefile -*-
 # Copyright (C) 2009 The Android Open Source Project
 #
 # Licensed under the Apache License, Version 2.0 (the "License");

CleanSpec.mk

+# -*- mode: makefile -*-
 # Copyright (C) 2007 The Android Open Source Project
 #
 # Licensed under the Apache License, Version 2.0 (the "License");

Docs.mk

+# -*- mode: makefile -*-
 # List of libcore directories to include in documentation.
 # Shared between libcore and frameworks/base.
 

NativeCode.mk

+# -*- mode: makefile -*-
 # Copyright (C) 2007 The Android Open Source Project
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
@@ -101,7 +102,7 @@ LOCAL_MODULE_TAGS := optional
 LOCAL_MODULE := libjavacore
 
 ifneq ($(TARGET_SIMULATOR),true)
-LOCAL_C_INCLUDES += external/stlport/stlport bionic/ bionic/libstdc++/include 
+LOCAL_C_INCLUDES += external/stlport/stlport bionic/ bionic/libstdc++/include
 LOCAL_SHARED_LIBRARIES += libstlport
 endif
 

dalvik/src/main/native/sub.mk

+# -*- mode: makefile -*-
 # This file is included by the top-level libcore Android.mk.
 # It's not a normal makefile, so we don't include CLEAR_VARS
 # or BUILD_*_LIBRARY.

luni/src/main/native/sub.mk

+# -*- mode: makefile -*-
 # This file is included by the top-level libcore Android.mk.
 # It's not a normal makefile, so we don't include CLEAR_VARS
 # or BUILD_*_LIBRARY.

sqlite-jdbc/Android.mk

+# -*- mode: makefile -*-
 
 sqlite_jdbc_src_files := \
     src/main/native/sqlite_jni.c