Fixed update_manifest to correctly accept format: pepper -b .. -B .....

native_client_sdk/src/build_tools/sdk_tools/update_manifest.py

Index: native_client_sdk/src/build_tools/sdk_tools/update_manifest.py
diff --git a/native_client_sdk/src/build_tools/sdk_tools/update_manifest.py b/native_client_sdk/src/build_tools/sdk_tools/update_manifest.py
index 8d8d0dff4918ed33c498783e3aebec617f578e3c..d020e0a226b7c23235e772a2b449c8978d7ce297 100755
--- a/native_client_sdk/src/build_tools/sdk_tools/update_manifest.py
+++ b/native_client_sdk/src/build_tools/sdk_tools/update_manifest.py
@@ -272,6 +272,8 @@ class UpdateSDKManifestFile(sdk_update.SDKManifestFile):
       raise Error('Need to specify a bundle version')
     if options.bundle_revision is None:
       raise Error('Need to specify a bundle revision')
+    if options.bundle_name == 'pepper':
+      self.options.bundle_name = 'pepper_%s' % options.bundle_version
     if options.desc is None:
       options.desc = ('Chrome %s bundle, revision %s' %
                       (options.bundle_version, options.bundle_revision))