add setup_paths.py

normalizer/normalizer-prototypes/setup_paths.py

+import sys, os, os.path
+baseDir = os.path.dirname(os.path.abspath(__file__))
+commonDir = os.path.normpath(os.path.join(baseDir,"../../../../python-common/common/python"))
+
+if not commonDir in sys.path:
+    sys.path.insert(0, commonDir)