Write retry text to stderr so stdout is clean for real output from gsutil.
Review URL: https://chromiumcodereview.appspot.com/10358004

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/command_wrapper/bin@135178 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/command_wrapper.py b/command_wrapper.py
index 91f9b6e..714dc45 100755
--- a/command_wrapper.py
+++ b/command_wrapper.py
@@ -149,9 +149,9 @@
       return p.returncode
     if p.returncode == 0:
       return 0
-    print 'Command %s failed with retcode %d, try %d.' % (
+    print >> sys.stderr, 'Command %s failed with retcode %d, try %d.' % (
         ' '.join(args), p.returncode, r + 1)
-  print 'Command %s failed %d retries, giving up.' % (
+  print >> sys.stderr, 'Command %s failed %d retries, giving up.' % (
       ' '.join(args), options.retries)
 
   return p.returncode