- Remove redundent lines in Makefile (defined already in Makefile.common)
- Or the other away around, strip Makefile.common side

- more on REPLACE_PYTHON 
lib/python2.7/site-packages/gnuradio/fec/extended_tagged_encoder.py
lib/python2.7/site-packages/gnuradio/fec/fec_test.py
lib/python2.7/site-packages/gnuradio/fec/threaded_decoder.py
lib/python2.7/site-packages/gnuradio/fec/threaded_encoder.py
lib/python2.7/site-packages/gnuradio/filter/freq_xlating_fft_filter.py
lib/python2.7/site-packages/gnuradio/gr/packet_utils.py
lib/python2.7/site-packages/gnuradio/grc/python/flow_graph.tmpl
