[NaCl SDK] Change build script to test sdk_updater, also push manifest snippets per bot.

native_client_sdk/src/build_tools/buildbot_common.py

Index: native_client_sdk/src/build_tools/buildbot_common.py
diff --git a/native_client_sdk/src/build_tools/buildbot_common.py b/native_client_sdk/src/build_tools/buildbot_common.py
index 3c37ed9436d4b754ea4ca9d7dd7ca918d32e5f7c..c87f27522af5593964c32b6193a6610c20564440 100644
--- a/native_client_sdk/src/build_tools/buildbot_common.py
+++ b/native_client_sdk/src/build_tools/buildbot_common.py
@@ -97,7 +97,7 @@ def GetGsutil():
     return LOCAL_GSUTIL
 
 
-def Archive(filename, bucket_path, cwd=None):
+def Archive(filename, bucket_path, cwd=None, step_link=True):
   """Upload the given filename to Google Store."""
   full_dst = 'gs://%s/%s' % (bucket_path, filename)
 
@@ -107,5 +107,6 @@ def Archive(filename, bucket_path, cwd=None):
       cwd=cwd)
   url = 'https://commondatastorage.googleapis.com/'\
         '%s/%s' % (bucket_path, filename)
-  print '@@@STEP_LINK@download@%s@@@' % url
-  sys.stdout.flush()
+  if step_link:
+    print '@@@STEP_LINK@download@%s@@@' % url
+    sys.stdout.flush()