Made renaming encoders/decoders use renaming registry

lib/c/2014/labcomm2014_renaming_decoder.c

lib/c/2014/labcomm2014_renaming_decoder.h

lib/c/2014/labcomm2014_renaming_encoder.c

lib/c/2014/labcomm2014_renaming_encoder.h

lib/c/2014/labcomm2014_renaming_registry.c

lib/c/2014/test/test_labcomm_renaming_decoder.c

lib/c/2014/test/test_labcomm_renaming_encoder.c

lib/c/2014/test/test_labcomm_renaming_registry.c

test/Makefile

test/relay_gen_c.py