Fix licensing headers and move most third party code to third_party/

Moved tests/pymox to third_party/pymox
Moved upload.py to third_party/upload.py
Fixed tests so they can run standalone
Fixed the executable bit on some scripts

TEST=none
BUG=34376
Review URL: http://codereview.chromium.org/562031

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@37987 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/gcl.py b/gcl.py
index 8b14931..1ed9051 100755
--- a/gcl.py
+++ b/gcl.py
@@ -15,7 +15,7 @@
 import subprocess
 import sys
 import tempfile
-import upload
+from third_party import upload
 import urllib2
 
 import breakpad