AU: Minor fixes to get it to do full update on real device

- Link w/ gtest only for unittests.

- filesystem_copier_action: always send install plan on the output pipe
  on success, even if no copy was performed.

- omaha_response_handler: properly choose install partition based on
  new GPT partition spec.

- More useful logging to match memento_updater (which update URL is
  used, dump of the request/response for the update check).

- Fixed a bug where I wasn't bonding the proper actions together in update_attempter.

BUG=None
TEST=attached unittests/did full update on Eee PC

Review URL: http://codereview.chromium.org/2044001
diff --git a/action.h b/action.h
index b45100a..9e6eb94 100644
--- a/action.h
+++ b/action.h
@@ -187,7 +187,7 @@
     return out_pipe_->contents();
   }
 
-protected:
+ protected:
   // We use a shared_ptr to the pipe. shared_ptr objects destroy what they
   // point to when the last such shared_ptr object dies. We consider the
   // Actions on either end of a pipe to "own" the pipe. When the last Action