cit: print to stderr to allow piping from cit log cat.

[email protected],[email protected]
BUG=

Review-Url: https://codereview.chromium.org/2062053002

cit.py

@@ -56,8 +56,10 @@ def need_to_update(branch):
 
 def ensure_infra(branch):
  """Ensures that infra.git is present in ~/.chrome-infra."""
- print 'Fetching infra@%s into %s, may take a couple of minutes...' % (
- branch, TARGET_DIR)
+ sys.stderr.write(
+ 'Fetching infra@%s into %s, may take a couple of minutes...' % (
+ branch, TARGET_DIR))
+ sys.stderr.flush()
  if not os.path.isdir(TARGET_DIR):
  os.mkdir(TARGET_DIR)
  if not os.path.exists(os.path.join(TARGET_DIR, '.gclient')):
@@ -69,6 +71,8 @@ def ensure_infra(branch):
  [sys.executable, GCLIENT, 'sync', '--revision', 'origin/%s' % (branch,)],
  cwd=TARGET_DIR,
  stdout=subprocess.PIPE)
+ sys.stderr.write(' done.\n')
+ sys.stderr.flush()
 
 
 def get_available_tools():