Add markdown to third_party/pkg

pkg/pkg.gyp

Index: pkg/pkg.gyp
diff --git a/pkg/pkg.gyp b/pkg/pkg.gyp
index 172eef521fb63ea07a7f55fa83ca753f9aedf29b..d2f840be768d7992b426113d678c34ba0f920567 100644
--- a/pkg/pkg.gyp
+++ b/pkg/pkg.gyp
@@ -24,6 +24,22 @@
             '<@(_inputs)',
           ],
         },
+        {
+          'action_name': 'make_third_party_packages',
+          'inputs': [
+            '../tools/make_links.py',
+            '<!@(["python", "../tools/list_pkg_directories.py", "../third_party/pkg"])',

[Bob Nystrom, 2013/07/08 16:40:08]

Long line.

[Emily Fortuna, 2013/07/08 17:36:30]

Done.

+          ],
+          'outputs': [
+            '<(SHARED_INTERMEDIATE_DIR)/packages.stamp',

[Bob Nystrom, 2013/07/08 16:40:08]

Should probably use a different time stamp file for this since it's a separate
output. Maybe "third_party_packages.stamp".

[Emily Fortuna, 2013/07/08 17:36:30]

Done.

+          ],
+          'action': [
+            'python', '../tools/make_links.py',
+            '--timestamp_file=<(SHARED_INTERMEDIATE_DIR)/packages.stamp',

[Bob Nystrom, 2013/07/08 16:40:08]

And here.

[Emily Fortuna, 2013/07/08 17:36:30]

Done.

+            '<(PRODUCT_DIR)/packages',
+            '<@(_inputs)',
+          ],
+        },
       ],
     }
   ],