Source release v2.1.3-2-789 + third_party libs

Change-Id: I8648756dab3fe1f53d6da18b83cd1294581d1abe

third_party/protobuf.gyp

@@ -52,6 +52,7 @@
       'target_name': 'protobuf',
       'type': 'static_library',
       'toolsets': ['host'],
+      'includes': ['xcode_host.gypi'],  # xcode workaround
       'sources': [
         '<@(protobuf_lite_sources)',
 
@@ -89,6 +90,7 @@
       'target_name': 'protoc',
       'type': 'executable',
       'toolsets': ['host'],
+      'includes': ['xcode_host.gypi'],  # xcode workaround
       'sources': [
         '<(protobuf_source_dir)/src/google/protobuf/compiler/code_generator.cc',
         '<(protobuf_source_dir)/src/google/protobuf/compiler/command_line_interface.cc',

third_party/xcode_host.gypi

@@ -0,0 +1,15 @@
+# Copyright 2014 Google Inc. All Rights Reserved.
+
+# Since the Xcode generator for gyp doesn't support host targets,
+# the workaround is to add a special xcode_settings section to any
+# target that must be built for the host.  This file encapsulates
+# those settings such that they can be included into any target.
+
+{
+  'xcode_settings': {
+    'VALID_ARCHS': 'i386 x86_64',
+    'IPHONEOS_DEPLOYMENT_TARGET': '',
+    'TARGETED_DEVICE_FAMILY': '',
+    'SDKROOT': '',
+  },
+}