Modify bsdiff 4.3 to goobsdiff, which is appropriate for use as the Mac binary differ/patcher

chrome/installer/mac/third_party/bsdiff/goobsdiff.gyp

+# Copyright (c) 2010 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+{
+  'target_defaults': {
+    'type': 'executable',
+    'link_settings': {
+      'libraries': [
+        '$(SDKROOT)/usr/lib/libbz2.dylib',
+        '$(SDKROOT)/usr/lib/libz.dylib',
+        '$(SDKROOT)/usr/lib/libcrypto.dylib',
+      ],
+    },
+  },
+  'targets': [
+    {
+      'target_name': 'goobsdiff',
+      'sources': [
+        'goobsdiff.c',
+      ],
+    },
+    {
+      'target_name': 'goobspatch',
+      'sources': [
+        'goobspatch.c',
+      ],
+    },
+  ],
+}
+
+# Local Variables:
+# tab-width:2
+# indent-tabs-mode:nil
+# End:
+# vim: set expandtab tabstop=2 shiftwidth=2: