Add _android files for building DartVM on Android

runtime/vm/gdbjit_android.cc

-// Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
+// Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include <stdint.h>
 #include <stdio.h>
 #include <stdlib.h>
 
-#include "vm/gdbjit_linux.h"
+#include "vm/gdbjit_android.h"
 
 extern "C" {
   typedef enum {
     JIT_NOACTION = 0,
     JIT_REGISTER_FN,
     JIT_UNREGISTER_FN
   } jit_actions_t;
 
   struct jit_code_entry {
     struct jit_code_entry *next_entry;
@@ skipping 48 matching lines @@
       __jit_debug_descriptor.action_flag = JIT_UNREGISTER_FN;
       __jit_debug_descriptor.relevant_entry = iterator;
       __jit_debug_descriptor.first_entry = first_dynamic_region;
       __jit_debug_register_code();
       iterator = iterator->prev_entry;
     }
     first_dynamic_region = NULL;
     last_dynamic_region = NULL;
   }
 };