Add netbsd support to gyp build.

tools/gyp/v8.gyp

-# Copyright 2011 the V8 project authors. All rights reserved.
+# Copyright 2012 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
 #       with the distribution.
@@ skipping 665 matching lines @@
                 'link_settings': {
                   'libraries': [
                     '-L/usr/local/lib -lexecinfo',
                 ]},
                 'sources': [
                   '../../src/platform-openbsd.cc',
                   '../../src/platform-posix.cc'
                 ],
               }
             ],
+            ['OS=="netbsd"', {
+                'link_settings': {
+                  'libraries': [
+                    '-L/usr/pkg/lib -Wl,-R/usr/pkg/lib -lexecinfo',
+                ]},
+                'sources': [
+                  '../../src/platform-openbsd.cc',
+                  '../../src/platform-posix.cc'
+                ],
+              }
+            ],
             ['OS=="solaris"', {
                 'sources': [
                   '../../src/platform-solaris.cc',
                   '../../src/platform-posix.cc',
                 ],
               }
             ],
             ['OS=="mac"', {
               'sources': [
                 '../../src/platform-macos.cc',
@@ skipping 238 matching lines @@
             }],
           ],
           'dependencies': [
             'v8'
           ],
         },
       ],
     }],
   ],
 }