Update libjingle license statements at top of talk files for consistency

BUG=2133
R=juberti@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/39559004

git-svn-id: http://webrtc.googlecode.com/svn/trunk@8105 4adac7df-926f-26a2-2b94-8c16560cd09d
diff --git a/talk/PRESUBMIT.py b/talk/PRESUBMIT.py
index 9e7b5da..3e121f5 100644
--- a/talk/PRESUBMIT.py
+++ b/talk/PRESUBMIT.py
@@ -32,7 +32,7 @@
   years_re = '%s(--%s)?' % (years_re, years_re)
   license_header = (
       r'.*? libjingle\n'
-      r'.*? Copyright %(year)s,? Google Inc\.\n'
+      r'.*? Copyright %(year)s Google Inc\..*\n'
       r'.*?\n'
       r'.*? Redistribution and use in source and binary forms, with or without'
         r'\n'