AIX: Define __STDC_FORMAT_MACROS in gypi file

gypfiles/toolchain.gypi

 # Copyright 2013 the V8 project authors. All rights reserved.
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #     * Redistributions of source code must retain the above copyright
 #       notice, this list of conditions and the following disclaimer.
 #     * Redistributions in binary form must reproduce the above
 #       copyright notice, this list of conditions and the following
 #       disclaimer in the documentation and/or other materials provided
@@ skipping 1069 matching lines @@
       ['OS=="freebsd" or OS=="openbsd"', {
         'cflags': [ '-I/usr/local/include' ],
       }],
       ['OS=="netbsd"', {
         'cflags': [ '-I/usr/pkg/include' ],
       }],
       ['OS=="aix"', {
         'defines': [
           # Support for malloc(0)
           '_LINUX_SOURCE_COMPAT=1',
+          '__STDC_FORMAT_MACROS',
           '_ALL_SOURCE=1'],
         'conditions': [
           [ 'v8_target_arch=="ppc"', {
             'ldflags': [ '-Wl,-bmaxdata:0x60000000/dsa' ],
           }],
           [ 'v8_target_arch=="ppc64"', {
             'cflags': [ '-maix64' ],
             'ldflags': [ '-maix64' ],
           }],
         ],
@@ skipping 288 matching lines @@
             ],
           },
           'Release_x64': {
             'inherit_from': ['ReleaseBase'],
           },
         }],
       ],
     },  # configurations
   },  # target_defaults
 }